Are we alone? To find out, we’re building the Habitable Worlds Observatory. This powerful space telescope uses proven technologies from @NASAHubble, @NASAWebb, and @NASARoman to look for signatures of planets that can support life — and maybe life itself.

Have you wondered … what is a star? In short, mostly a giant ball of hot gas. We're quite familiar with our star, the Sun, but there are many other types with different sizes, masses, ages, temperatures, and levels of brightness. Watch more:

RT @NASAHubble: Digging up a galactic time capsule 🕰️. This #HubbleFriday view shows the globular cluster NGC 1786. Because of their stabi….

RT @NASAHubble: Want to know what Hubble's up to?. You can always check what the telescope is currently investigating (or explore its upcom….

RT @NASARoman: Roman’s ready to soak up the Sun! ☀️. #ICYMI: The solar panels have been installed on our Nancy Grace Roman Space Telescope….

Get ready for a new NASA @SpaceApps Challenge on October 4-5!. Check out the post for more details, and register here:

#TBT to July 13, 2018, when 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. Learn more:

Hot DOGs 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.

RT @NASApeople: Ready to launch your NASA internship journey?.Join our live webinar Friday, Aug. 1, 1–2 p.m. ET to explore opportunities, l….

RT @chandraxray: A star is bombarding a baby planet with X-rays, shrinking it from the size of Jupiter to a small, barren world, according….

The beautiful yet complex NGC 5189 consists of two nested structures, tilted with respect to each other. Don't you think it looks a bit like a snake? These formations are expanding away from their central star in different directions. 🐍

RT @NASAGoddard: A sea of (eclipsing binary) stars 🌌. Citizen scientists found 7,936 new eclipsing binary star systems, bringing the total….

RT @NASAHubble: NGC 4388 is one of more than 1,300 galaxies within the Virgo Cluster. By being part of such a tightknit galactic group, NG….

@JAXA_en @Space_Station Our NICER telescope, also on the @Space_Station, has teamed up with MAXI to catch unpredictable X-ray outbursts with the OHMAN rapid-response system. Through a laptop, MAXI has relayed new events to NICER so it could take a deeper look:

#OTD in 2009, @JAXA_en’s MAXI (Monitor of All-sky X-ray Image) experiment launched aboard the space shuttle Endeavour. From its perch on the @Space_Station, MAXI scans the sky to catch changes in the X-ray light coming from sources like stars and black holes.

How do pulsars interact with their environments? Astronomers used our IXPE telescope and other observatories to study one of these spinning stellar cores, finding that the energetic pulsar wind it produces may power the multiwavelength light we detect:

RT @NASAWebb: Hold onto your Gauntlet, Webb may have observed the birth of a supermassive black hole in the Infinity Galaxy - between the n….

How is an exploding star like a tape measure? .It’s no riddle! Astronomers measure distances to faraway galaxies using a kind of supernova called type Ia. We know how much light they emit, so we can infer their distance by how bright they appear! #NationalTapeMeasureDay

RT @NASAWebb: Three years of wonder ✨ . It's been three years since we released our first science images, here's a recap. We're grateful to….

Light is so fast that it could circle Earth seven and a half times in one second. But the universe is so large that it takes billions of years for light to reach us from the farthest objects we can see. #MondayMotivation