Tuesday, February 18, 2025

Inbox Astronomy: Webb Reveals Rapid-Fire Light Show From Milky Way's Central Black Hole

INBOX ASTRONOMY

Webb Reveals Rapid-Fire Light Show From Milky Way's Central Black Hole

Release date: Tuesday, February 18, 2025 11:00:00 AM Eastern Standard Time

Webb Reveals Rapid-Fire Light Show From Milky Way's Central Black Hole



Observations revealed ongoing fireworks featuring short bursts and longer flares.

Imagine solar flares, but on a mind-boggling scale. A constant scintillation that is bright enough to shine across 26,000 light-years of space. And interspersed between the flickers, brilliant flashes that spew out on a daily basis.

Researchers using NASA’s James Webb Space Telescope have spotted this activity in the center of our galaxy. The source is the accretion disk around the Milky Way’s central supermassive black hole. Webb detected brightness changes over remarkably short timescales, meaning they are coming from the black hole’s inner disk, not far beyond its event horizon.



Find additional articles, images, and videos at WebbTelescope.org



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Thursday, February 13, 2025

Inbox Astronomy: Webb Maps Full Picture of How Phoenix Galaxy Cluster Forms Stars

INBOX ASTRONOMY

Webb Maps Full Picture of How Phoenix Galaxy Cluster Forms Stars

Release date: Thursday, February 13, 2025 10:00:00 AM Eastern Standard Time

Webb Maps Full Picture of How Phoenix Galaxy Cluster Forms Stars



Discovery proves decades-old theory of galaxy feeding cycle.

Since its discovery in 2010, the Phoenix cluster has always been one to stand out from the bunch.

It's one of the most massive galaxy clusters known to astronomers, and was the first galaxy cluster found to have a supermassive black hole that promotes, instead of hinders, a high rate of star formation.

Just how that was happening, though, remained a mystery. Researchers could see super-hot gas, and super-cold filaments of gas hiding forming stars. However, the in-between remained unseen. That is, until NASA's James Webb Space Telescope's infrared eye examined the cluster's core and found the missing cooling gas.



Find additional articles, images, and videos at WebbTelescope.org



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Tuesday, February 4, 2025

Inbox Astronomy: Straight Shot: Hubble Investigates Galaxy with Nine Rings

INBOX ASTRONOMY

Straight Shot: Hubble Investigates Galaxy with Nine Rings

Release date: Tuesday, February 4, 2025 10:00:00 AM Eastern Standard Time

Straight Shot: Hubble Investigates Galaxy with Nine Rings



Hubble’s high-resolution imagery allowed researchers to hone in on more of the Bullseye galaxy’s rings — and helped confirm which galaxy dove through its core.

Seabirds like the Northern Gannet plunge directly into the sea in pursuit of fish, sometimes from as high as 100 feet (30 meters). The birds’ spear-like bills and expertly tucked wings minimize splash upon impact, but water still ripples out in tiny waves.

Now, let’s switch to space — and swap the bird for a tiny galaxy and the ocean for a vast galaxy.

A tiny blue dwarf galaxy flew through the far more massive Bullseye galaxy 50 million years ago with similar effects, producing at least nine star-filled rings in its larger companion. In space, those “waves” ripple out differently. The gas, dust, and stars are pushed both inward and outward.

Seeing an effect like this in great detail is highly unusual. Both the Hubble Space Telescope and the W. M. Keck Observatory in Hawaii proved that the Bullseye galaxy has nine rings — six more than any other known galaxy. Plus, Hubble identified which galaxy dropped through the Bullseye’s core: The blue dwarf galaxy that now “sits” directly to its left.



Find additional articles, images, and videos at www.stsci.edu



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Thursday, January 16, 2025

[NASA HQ News] NASA News Subscriber Update

Dear NASA news subscriber,

 

Thank you for signing up to receive NASA’s news releases and media advisories. We wanted to let you know about an upcoming change to the NASA news email delivery system.

 

Starting Thursday, Jan. 16, subscribers will receive NASA news emails through the Constant Contact platform from hq-news@mail.nasa.gov. While you may notice a slight change in email format, no other action is needed to continue receiving this information.

 

However, if you believe you are no longer receiving NASA news emails after Jan. 16, you may view the agency’s latest news or subscribe again through this form. 

 

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Inbox Astronomy: NASA's Hubble Traces Hidden History of Andromeda Galaxy

INBOX ASTRONOMY

NASA's Hubble Traces Hidden History of Andromeda Galaxy

Release date: Thursday, January 16, 2025 2:15:00 PM Eastern Standard Time

NASA's Hubble Traces Hidden History of Andromeda Galaxy



Panorama of Nearest Galaxy Unveils Hundreds of Millions of Stars

On a chilly, crystal-clear autumn night you can see the farthest object visible in the universe without the aid of a telescope or binoculars. Just to the northeast of the Great Square of Pegasus, it appears as a spindle-shaped patch of haze with a bright center. It is the nearest galaxy to our Milky Way, the magnificent Andromeda galaxy. The faint light you are seeing left the spiral galaxy 2.5 million years ago to cross the immense gulf in intergalactic space toward Earth. Back then, on Earth, one of the earliest known humans, Homo habilis, appeared. This early ancestor has been nicknamed "handy man," as the maker of the first stone tools.

Fast forward to early decade of the 21st century, when one of the most powerful science tools ever conceived by humans – the Hubble Space Telescope – took over 10 years to make a photomosaic portrait of the galaxy's ancient light, taking over 600 snapshots. Why such a monumental task? The galaxy is so close to us, that in angular size it is six times the apparent diameter of the full Moon. For Hubble's pinpoint view, that's a lot of celestial real estate to cover. This stunning, colorful mosaic, captures the glow of 200 million stars. That's still a fraction of Andromeda's population. And the stars-dotted images are crammed into at least 2.5 billion pixels. Try framing that portrait! Hubble's detailed look at the resolved stars will help astronomers piece together the galaxy's past history that includes mergers with smaller satellite galaxies.



Find additional articles, images, and videos at www.stsci.edu



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Inbox Astronomy: NASA's Hubble Traces Hidden History of Andromeda Galaxy

INBOX ASTRONOMY

NASA's Hubble Traces Hidden History of Andromeda Galaxy

Release date: Thursday, January 16, 2025 2:15:00 PM Eastern Standard Time

NASA's Hubble Traces Hidden History of Andromeda Galaxy



Panorama of Nearest Galaxy Unveils Hundreds of Millions of Stars

On a chilly, crystal-clear autumn night you can see the farthest object visible in the universe without the aid of a telescope or binoculars. Just to the northeast of the Great Square of Pegasus, it appears as a spindle-shaped patch of haze with a bright center. It is the nearest galaxy to our Milky Way, the magnificent Andromeda galaxy. The faint light you are seeing left the spiral galaxy 2.5 million years ago to cross the immense gulf in intergalactic space toward Earth. Back then, on Earth, one of the earliest known humans, Homo habilis, appeared. This early ancestor has been nicknamed "handy man," as the maker of the first stone tools.

Fast forward to early decade of the 21st century, when one of the most powerful science tools ever conceived by humans – the Hubble Space Telescope – took over 10 years to make a photomosaic portrait of the galaxy's ancient light, taking over 600 snapshots. Why such a monumental task? The galaxy is so close to us, that in angular size it is six times the apparent diameter of the full Moon. For Hubble's pinpoint view, that's a lot of celestial real estate to cover. This stunning, colorful mosaic, captures the glow of 200 million stars. That's still a fraction of Andromeda's population. And the stars-dotted images are crammed into at least 2.5 billion pixels. Try framing that portrait! Hubble's detailed look at the resolved stars will help astronomers piece together the galaxy's past history that includes mergers with smaller satellite galaxies.



Find additional articles, images, and videos at HubbleSite.org



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Inbox Astronomy: This Tiny Galaxy Is Answering Some Big Questions

INBOX ASTRONOMY

This Tiny Galaxy Is Answering Some Big Questions

Release date: Thursday, January 16, 2025 2:15:00 PM Eastern Standard Time

This Tiny Galaxy Is Answering Some Big Questions



Researchers used the James Webb Space Telescope to reveal patterns of star formation in an isolated dwarf galaxy.

Sometimes little galaxies hold big clues to star formation over cosmic time. An STScI-led team of astronomers has used the James Webb Space Telescope to study Leo P, a dwarf galaxy located about 5.3 million light years from Earth that was discovered in 2013. Leo P is relatively isolated from other, larger galaxies like the Milky Way and Andromeda, which means it has been unaffected by their influence.

The team found that Leo P formed stars early on but then stopped making them shortly after a period known as the Epoch of Reionization, which brought an end to the universe’s “dark ages.” After a few billion years, the galaxy reignited and started forming new stars again. This is unusual because most dwarf galaxies whose star formation shut down never restarted.



Find additional articles, images, and videos at www.stsci.edu



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Wednesday, January 15, 2025

Inbox Astronomy: NASA Celebrates Edwin Hubble's Discovery of a New Universe

INBOX ASTRONOMY

NASA Celebrates Edwin Hubble's Discovery of a New Universe

Release date: Wednesday, January 15, 2025 10:15:00 AM Eastern Standard Time

NASA Celebrates Edwin Hubble's Discovery of a New Universe



Pinpointing a Milepost Marker Star that Opened the Realm of Galaxies

Astronomers were befuddled at the beginning of the 20th century. The nighttime sky was littered with at least 110 nebulous objects first cataloged by French astronomer Charles Messier in the late 1700s. Most were identified as star clusters, nebulae, supernova remnants, and vast clumps of glowing gases.

But 40 of the objects were mysterious whirlpools on the sky collectively called the realm of the spiral nebulae. Unlike the other Messier objects, they were all scattered across the sky. To compound the confusion astronomer Vesto Slipher used spectroscopy to discover that the light from all of the spiral nebulae was redshifted, leading to the puzzling interpretation they all were moving away from us.

Edwin Hubble thought that the spiral nebulae were extragalactic because they were not constricted to the plane of our galaxy. But he needed observational evidence to nail down actual distances. He went hunting for stars embedded inside the spiral nebulae. In particular he searched for a unique class called Cepheid variables because they pulsate at a rhythm that correlates with their intrinsic brightness. And, that can be used to calculate astronomical distances. When Hubble measured the distance to a Cepheid in Andromeda, called V1, it settled debate over whether those fuzzy spirals were just cosmic clouds, or whole other galaxies.

He discovered that the universe was much larger than some imagined by determining Andromeda was over 2 million light-years away, or 20 times our Milky Way's diameter. This was accomplished 100 years ago. It marked an intellectual phase transition in human knowledge by unveiling a mind-numbing scale of a universe full of external galaxies. They were all apparently rushing away from us in all directions, implying the universe has a finite age and was not eternal.

This opened a window to beholding a vast frontier that would be pursued over the next 100 years with the most powerful scientific instruments ever conceived. The capstone of this has been the Hubble Space Telescope that precisely determined the age of the universe to 13.8 billion years —based in part on far-flung Cepheid star measurements.



Find additional articles, images, and videos at HubbleSite.org



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[NASA HQ News] Liftoff! NASA Sends Science, Tech to Moon on Firefly, SpaceX Flight

Liftoff! NASA Sends Science, Tech to Moon on Firefly, SpaceX Flight

Jan 15, 2025

RELEASE 25-006

 

Creating a golden streak in the night sky, a SpaceX Falcon 9 rocket carrying Firefly Aerospace’s Blue Ghost Mission One lander soars upward after liftoff from Launch Complex 39A at NASA’s Kennedy Space Center in Florida on Wednesday, Jan. 15, as part of NASA’s CLPS (Commercial Lunar Payload Services) initiative. The Blue Ghost lander will carry 10 NASA science and technology instruments to the lunar surface to further understand the Moon and help prepare for future human missions.

Credit: NASA/Frank Michaux

A suite of NASA scientific investigations and technology demonstrations is on its way to our nearest celestial neighbor aboard a commercial spacecraft, where they will provide insights into the Moon’s environment and test technologies to support future astronauts landing safely on the lunar surface under the agency’s Artemis campaign.

Carrying science and tech on Firefly Aerospace’s first CLPS or Commercial Lunar Payload Services flight for NASA, Blue Ghost Mission 1 launched at 1:11 a.m. EST aboard a SpaceX Falcon 9 rocket from Launch Complex 39A at the agency’s Kennedy Space Center in Florida. The company is targeting a lunar landing on Sunday, March 2.

“This mission embodies the bold spirit of NASA’s Artemis campaign – a campaign driven by scientific exploration and discovery,” said NASA Deputy Administrator Pam Melroy. “Each flight we’re part of is vital step in the larger blueprint to establish a responsible, sustained human presence at the Moon, Mars, and beyond. Each scientific instrument and technology demonstration brings us closer to realizing our vision. Congratulations to the NASA, Firefly, and SpaceX teams on this successful launch.” 

Once on the Moon, NASA will test and demonstrate lunar drilling technology, regolith (lunar rocks and soil) sample collection capabilities, global navigation satellite system abilities, radiation tolerant computing, and lunar dust mitigation methods. The data captured could also benefit humans on Earth by providing insights into how space weather and other cosmic forces impact our home planet.  

“NASA leads the world in space exploration, and American companies are a critical part of bringing humanity back to the Moon,” said Nicola Fox, associate administrator, Science Mission Directorate, NASA Headquarters in Washington. “We learned many lessons during the Apollo Era which informed the technological and science demonstrations aboard Firefly’s Blue Ghost Mission 1 – ensuring the safety and health of our future science instruments, spacecraft, and, most importantly, our astronauts on the lunar surface. I am excited to see the incredible science and technological data Firefly’s Blue Ghost Mission 1 will deliver in the days to come.”

As part of NASA’s modern lunar exploration activities, CLPS deliveries to the Moon will help humanity better understand planetary processes and evolution, search for water and other resources, and support long-term, sustainable human exploration of the Moon in preparation for the first human mission to Mars. 

There are 10 NASA payloads flying on this flight:

  • Lunar Instrumentation for Subsurface Thermal Exploration with Rapidity (LISTER) will characterize heat flow from the interior of the Moon by measuring the thermal gradient and conductivity of the lunar subsurface. It will take several measurements to about a 10-foot final depth using pneumatic drilling technology with a custom heat flow needle instrument at its tip. Lead organization: Texas Tech University 
  • Lunar PlanetVac (LPV) is designed to collect regolith samples from the lunar surface using a burst of compressed gas to drive the regolith into a sample chamber for collection and analysis by various instruments. Additional instrumentation will then transmit the results back to Earth. Lead organization: Honeybee Robotics  
  • Next Generation Lunar Retroreflector (NGLR) serves as a target for lasers on Earth to precisely measure the distance between Earth and the Moon. The retroreflector that will fly on this mission could also collect data to understand various aspects of the lunar interior and address fundamental physics questions. Lead organization: University of Maryland
  • Regolith Adherence Characterization (RAC) will determine how lunar regolith sticks to a range of materials exposed to the Moon’s environment throughout the lunar day. The RAC instrument will measure accumulation rates of lunar regolith on the surfaces of several materials including solar cells, optical systems, coatings, and sensors through imaging to determine their ability to repel or shed lunar dust. The data captured will allow the industry to test, improve, and protect spacecraft, spacesuits, and habitats from abrasive regolith. Lead organization: Aegis Aerospace 
  • Radiation Tolerant Computer (RadPC) will demonstrate a computer that can recover from faults caused by ionizing radiation. Several RadPC prototypes have been tested aboard the International Space Station and Earth-orbiting satellites, but now will demonstrate the computer’s ability to withstand space radiation as it passes through Earth’s radiation belts, while in transit to the Moon, and on the lunar surface. Lead organization: Montana State University 
  • Electrodynamic Dust Shield (EDS) is an active dust mitigation technology that uses electric fields to move and prevent hazardous lunar dust accumulation on surfaces. The EDS technology is designed to lift, transport, and remove particles from surfaces with no moving parts. Multiple tests will demonstrate the feasibility of the self-cleaning glasses and thermal radiator surfaces on the Moon. In the event the surfaces do not receive dust during landing, EDS has the capability to re-dust itself using the same technology. Lead organization: NASA’s Kennedy Space Center 
  • Lunar Environment heliospheric X-ray Imager (LEXI) will capture a series of X-ray images to study the interaction of solar wind and the Earth’s magnetic field that drives geomagnetic disturbances and storms. Deployed and operated on the lunar surface, this instrument will provide the first global images showing the edge of Earth’s magnetic field for critical insights into how space weather and other cosmic forces surrounding our planet impact it. Lead organizations: NASA’s Goddard Space Flight Center, Boston University, and Johns Hopkins University 
  • Lunar Magnetotelluric Sounder (LMS) will characterize the structure and composition of the Moon’s mantle by measuring electric and magnetic fields. This investigation will help determine the Moon’s temperature structure and thermal evolution to understand how the Moon has cooled and chemically differentiated since it formed. Lead organization: Southwest Research Institute
  • Lunar GNSS Receiver Experiment (LuGRE) will demonstrate the possibility of acquiring and tracking signals from Global Navigation Satellite System constellations, specifically GPS and Galileo, during transit to the Moon, during lunar orbit, and on the lunar surface. If successful, LuGRE will be the first pathfinder for future lunar spacecraft to use existing Earth-based navigation constellations to autonomously and accurately estimate their position, velocity, and time. Lead organizations: NASA Goddard, Italian Space Agency
  • Stereo Camera for Lunar Plume-Surface Studies (SCALPSS) will use stereo imaging photogrammetry to capture the impact of rocket plume on lunar regolith as the lander descends on the Moon’s surface. The high-resolution stereo images will aid in creating models to predict lunar regolith erosion, which is an important task as bigger, heavier payloads are delivered to the Moon in close proximity to each other. This instrument also flew on Intuitive Machine’s first CLPS delivery. Lead organization: NASA’s Langley Research Center 

“With 10 NASA science and technology instruments launching to the Moon, this is the largest CLPS delivery to date, and we are proud of the teams that have gotten us to this point,” said Chris Culbert, program manager for the Commercial Lunar Payload Services initiative at NASA’s Johnson Space Center in Houston. “We will follow this latest CLPS delivery with more in 2025 and later years. American innovation and interest to the Moon continues to grow, and NASA has already awarded 11 CLPS deliveries and plans to continue to select two more flights per year.”

Firefly’s Blue Ghost lander is targeted to land near a volcanic feature called Mons Latreille within Mare Crisium, a more than 300-mile-wide basin located in the northeast quadrant of the Moon’s near side. The NASA science on this flight will gather valuable scientific data studying Earth’s nearest neighbor and helping pave the way for the first Artemis astronauts to explore the lunar surface later this decade.

Learn more about NASA’s CLPS initiative at:

https://www.nasa.gov/clps

-end-

 

Tuesday, January 14, 2025

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