Hot DOGs were on the menu in the early universe! Our retired WISE satellite spied hot dust-obscured galaxies (DOGs) located about 10 billion light-years away. While they are superbright, most of their light is absorbed by thick shrouds of dust. t.co/kQTclVX6Kz 🔗 go.nasa.gov/4fjul8i

#OTD in 2018 HaloSat deployed from the @Space_Station! This toaster-sized satellite helped find that the hot gas surrounding our galaxy, called its halo, is disk-shaped and clumpier than expected. More: t.co/KCtpzGWwNS

Don’t get caught up in the chaos! The planet-forming process can be messy. Near-collisions can occasionally fling a planet out of the gravitational grip of its star. Such rogue planets are likely scattered across our galaxy. #MondayMotivation

#OTD in 2005, @JAXA_en’s Suzaku satellite launched into space bearing X-ray technology developed at @NASA as part of an ongoing collaboration between the two space agencies. For a decade, Suzaku studied some of the hottest spots in the cosmos: t.co/cSCKIDhJMb

Want to make stellar treats like the members of our Fermi satellite team? Then check out the yummy sugar cookie recipe in the Fermi e-book, “Our High-Energy Universe: 15 Years with the Fermi Gamma-ray Space Telescope”: t.co/C92Xi4iIdA #SugarCookieDay 🔗 go.nasa.gov/4w5dNbp

Meet some cosmic ancestors. The @ESA_Euclid telescope, led by ESA with contributions from @NASA, has found some of the oldest quasars ever seen. Studies of these black-hole-powered galaxies help us learn how the earliest galaxies and black holes formed. t.co/783ejdVgxc 🔗 go.nasa.gov/44NaglV

When two stars collide, the result can be beautiful. This nebula, called the Blue Ring Nebula, is thought to show the aftermath of a stellar collision that occurred thousands of years ago. #MondayMotivation

Did you miss one of the biggest Swift events of the year? The LINK robotic spacecraft from Katalyst Space launched last week on a Northrop Grumman Pegasus XL to attempt an orbital boost of our Neil Gehrels Swift Observatory. But what’s next? Let’s take a look. ⬇️

Congratulations, Katalyst Space and Northrop Grumman, on a successful launch! Now Katalyst's LINK will undergo several weeks of commissioning before rendezvousing with our Swift observatory to attempt an orbital boost. More here: t.co/daQGHGsfoI 🔗 go.nasa.gov/44NZ20s

The next launch attempt of Northrop Grumman’s Pegasus XL rocket carrying LINK, Katalyst Space’s robotic servicing spacecraft to boost our Swift observatory, will be no earlier than July 3 at 4:35 a.m. ET. Get updates: t.co/WpiK7NFSLJ 🔗 science.nasa.gov/blogs/swift/

Excited about this summer’s mission to boost our Swift observatory? Learn more about Swift and get creative with a set of stained-glass-inspired coloring pages! Download them here: t.co/yBOPgGBD7a

Today’s launch of Northrop Grumman’s Pegasus XL rocket carrying LINK, Katalyst Space’s robotic servicing spacecraft to boost our Swift observatory, has been postponed. Stay tuned for launch updates, and get the latest info:

Henrietta Swan Leavitt was an American astronomer born on July 4, 1912. Her groundbreaking observations of Cepheid variable stars were the key to Edwin Hubble’s discovery that the Andromeda “nebula” is a galaxy like our own Milky Way. ⬇️

Our TESS telescope just learned a new skill in its hunt for exoplanets! TESS was designed to find planets by detecting dips in starlight from planets crossing in front of them. But it recently identified a planet through another method called microlensing. ⬇️

Today’s launch of Northrop Grumman’s Pegasus XL rocket carrying LINK, Katalyst Space’s robotic servicing spacecraft to boost our Swift observatory, has been postponed. Next attempt will be no earlier than July 2 at 5:09 a.m. ET. Get updates:

Today’s launch of Northrop Grumman’s Pegasus XL rocket carrying LINK, Katalyst Space’s robotic servicing spacecraft to boost our Swift observatory, has been postponed. Next attempt will be no earlier than July 1 at 5:43 a.m. ET. Get updates:

Are you ready for it? Tomorrow, June 30, at 6:17 a.m. ET, Katalyst Space's robotic servicing spacecraft, LINK, is scheduled to launch on a Northrop Grumman Pegasus XL rocket from Kwajalein Atoll to begin its journey to meet and boost our Swift observatory. Stay tuned for updates!

Our galaxy is one of trillions in the known universe. #MondayMotivation

Get hyped with us! LINK, Katalyst Space's robotic servicing satellite, is launching no earlier than June 30 from Kwajalein Atoll. LINK will attempt to raise our Neil Gehrels Swift Observatory's orbit before it re-enters the atmosphere. More: t.co/KNI3Wuneog 🔗 go.nasa.gov/4whjuTw

How powerful are gamma-ray bursts, the biggest explosions since the big bang? 💥 You could pop 10 million billion trillion trillion kernels of popcorn from the energy of one! Find out how satellites like Swift and Fermi study them: t.co/7z0anJUTdq

Our TESS telescope helped find two new “super-puff” planets that are about the size of Jupiter but have the density of cotton candy. TOI-791 b and c might even be the puffiest planets ever found! Further study can help us learn about planetary evolution. t.co/KvecR1vKJM 🔗 go.nasa.gov/4v6Oyo0

Every household needs a multitool … ours is the Swift observatory! At launch, Swift was a first-of-its kind spacecraft designed to study fleeting gamma-ray bursts, the most powerful explosions in the cosmos, using its Ultraviolet/Optical, X-ray, and Burst Alert telescopes. ⬇️

At @NASA, we undertake the near impossible. This month, a first-of-its-kind mission will launch to boost our Swift observatory before it re-enters Earth’s atmosphere. Follow along with this daring, rapid-response effort to advance American spacecraft servicing technology.

In the heart of the Lagoon Nebula are young, massive stars illuminating the gas and dust around them. These younglings blast enough radiation and particles to sculpt this eye-catching landscape. #MondayMotivation

On Thursday, Northrop Grumman’s Stargazer aircraft departed @NASAWallops for Kwajalein Atoll. This is where LINK, Katalyst Space’s robotic servicing spacecraft, will launch to rendezvous with our Swift telescope and attempt an orbital boost. Learn more: t.co/ZOipypoLBY 🔗 go.nasa.gov/3QW24fW

A moment of quiet after a busy year. The LINK robotic spacecraft from Katalyst Space will launch soon to attempt an orbital boost of our Swift observatory. It went from a concept to poised for launch in less than a year. Now, it is nestled into Northrop Grumman’s Pegasus XL rocket attached to t...

#TBT to June 13, 2012, when our NuSTAR (Nuclear Spectroscopic Telescope Array) headed to space! NuSTAR unlocks the mysteries of X-ray sources throughout the universe, from supermassive black holes to our very own Sun. To celebrate, here are some quick mission facts! ⬇️

These stars took sibling rivalry to the next level! Our Fermi telescope found two supernova remnants that are likely the debris from a stellar pair where one star exploded, sending the other hurtling through space … and then it blew up too: t.co/l0ZG8K9mhH #AAS248 🔗 go.nasa.gov/4vQ51NP

Engineers attached Northrop Grumman’s Pegasus XL rocket to the company’s Stargazer aircraft at @NASAWallops. Inside is LINK, Katalyst Space’s robotic servicing spacecraft, which will rendezvous with our Swift telescope to attempt an orbital boost. t.co/vR7cnWhUpa 🔗 go.nasa.gov/3SaFNvh

Light from GN-z11, one of the farthest known galaxies, has traveled 13.4 billion years to reach us. During that time, the expanding universe has carried this bright, infant galaxy another 20 billion light-years (or so) away. #MondayMotivation

Captured by our retired WISE telescope, this (infra)red rose is a star-forming cloud of dust and gas in our Milky Way galaxy. At its center is a cluster of young, massive stars that have eroded away the cloud, carving out a hole with their strong stellar winds. #RedRoseDay

#OTD in 2008, our Fermi Gamma-ray Space Telescope launched to view the universe with its gamma-ray eyes, collecting the highest-energy form of light. What’s Fermi been up to? Check out some recent news in this thread! ⬇️

LINK, Katalyst Space’s robotic servicing spacecraft, has been integrated into a Northrop Grumman Pegasus XL rocket at @NASAWallops. Later this month, it'll launch from Kwajalein Atoll and rendezvous with our Swift telescope to attempt an orbital boost. t.co/7W7jfJgmee 🔗 go.nasa.gov/4eDXoU3

Swift and Fermi are basically besties! They've teamed up to study gamma-rays — the highest-energy form of light — from sources near and far. Learn more about the time they helped scientists pinpoint powerful bursts from a nearby galaxy: t.co/XMg42wrIQU #BestFriendsDay

Lose your keys? That’s nothing! Astronomers misplaced an exploded star for 800 years. In 1181 skywatchers recorded a “guest star” in Cassiopeia that shone as bright as Saturn. After it faded, astronomers didn't find the remnant until 2013. #MondayMotivation

LINK, a robotic servicing spacecraft from Katalyst Space designed to boost the orbit of our Swift telescope, has arrived at @NASAWallops! Here, LINK will be installed in a Northrop Grumman Pegasus XL rocket set to launch later this month. Learn more: t.co/teg26V6ffj 🔗 go.nasa.gov/4ulUf0W

How does a pulsar accelerate particles to high speeds? Our IXPE telescope studied the spinning remains of a massive star and found a clue — well-organized magnetic fields in the donut-shaped pulsar wind nebula surrounding it! More about this cosmic pastry: t.co/0Ta8bHwOZ0 🔗 go.nasa.gov/4axHQ2C

#TBT to June 7, 1992, when our Extreme Ultraviolet Explorer, or EUVE, headed to space. For over eight years, EUVE rotated as it orbited Earth, allowing its telescopes to survey nearly the entire sky as well as make pointed observations of stars, comets, planets, and more.

Our Fermi satellite sees pulsar music in gamma-ray flashes. The uptempo beat of jet procession, like a strobing laser. The slow rhythm of cosmic romance: a pulsar binary pair orbiting around one another in a grand pas de deux. The music of the cosmos on repeat. 🎵 #RepeatDay

#OTD in 1990, ROSAT (Roentgen Satellite), an X-ray telescope developed jointly by Germany, the United Kingdom, and @NASA, headed to space. During nearly 9 years in orbit, it cataloged over 150,000 sources and observed a wide variety of objects. More: t.co/1Ai0AnlgHg 🔗 go.nasa.gov/3QeUEnG

Globular clusters are stellar "dinosaurs" scattered throughout the universe, containing some of the oldest stars in the universe. These clusters can contain anywhere from tens of thousands to millions of stars, packed tightly together in a dense clump. #DinosaurDay

About once a day our telescopes detect a massive burst of gamma-rays that signals the birth of a black hole somewhere in the distant universe. #MondayMotivation

Want to live on a planet orbiting a black hole? Grab your sunscreen and read about the downsides of being close to one of these exotic objects: t.co/eVmDLEBfbm Learn more fun facts about black holes with “The Traveler” on NASA+: t.co/K37Q5X5bLu #SunscreenDay

We’re keeping a close eye on the altitude of our Swift observatory in preparation for a boost by LINK, a robotic servicing spacecraft from Katalyst Space set to launch this June. Learn more about this monitoring and boost prep: t.co/VHPTL8VfX8 🔗 go.nasa.gov/4f3TsO5

#OTD 15 years ago, the Alpha Magnetic Spectrometer began collecting cosmic rays from its perch on the @Space_Station. More than 260 billion cosmic rays later, AMS continues to help us learn how the universe works. What are cosmic rays? Learn more: t.co/UwE9jBedW4 🔗 tmblr.co/Zz_Uqj2XaWrWy

It’s all in your perspective! We are seeing just the edge of this pencil-thin galaxy known as NGC 4565. If we could just change our angle, though, we would see it has grand spiral arms just like our own Milky Way. #MondayMotivation

Our TESS telescope has released its most complete view of the starry sky yet! All those dots? They're confirmed and candidate planets! Since launching in April 2018, TESS has been scanning wide swaths of the sky to build up this mosaic. t.co/JieX9DLkaU 🔗 go.nasa.gov/49MK9hU

#OTD in 2022, the @ehtelescope released a breathtaking new view of the supermassive black hole at the center of our galaxy, Sagittarius A* (pronounced A-star). Our @chandraxray, NuSTAR, and Swift helped keep an eye on it during the April 2017 observations: t.co/bmUMWPad7L

Astronomers have found that there are likely more planets than stars in our galaxy. That’s billions of undiscovered, unexplored worlds! #MondayMotivation

This week, engineers concluded environmental tests of the LINK spacecraft at @NASAGoddard. This June, LINK, a robotic servicing spacecraft from Katalyst Space Technologies, will launch on a mission to raise the orbit of our Swift observatory. More: t.co/o56Q5vRaP2 🔗 go.nasa.gov/4dcHBdM