☃️ Guess what? It’s #WorldSnowmanDay!

The Snowman Nebula is about 6,000 light-years from Earth in the constellation Puppis. Hubble’s view captures sweeping curves of bright gas and dark knots of dust.

Learn more about this beautiful nebula: https://t.co/f1ZkoVEXsP https://t.co/090vQXxR5z

RT @chandraxray: The "wings" of the Butterfly Nebula may appear to be covered in snow & ice in this Chandra and Hubble image, but looks can be deceiving. The wings are actually scorching hot regions of gas at temperatures over 20,000 °C that are traveling at more than 950,000 kilometers per hour. https://t.co/ynW2Ttdbof

Take it in.

This breathtaking #HubbleFriday view shows the spiral galaxy NGC 976. It’s located 150 million light-years away, in the constellation Aries.

Discover more: https://t.co/kv1OBHyE9e https://t.co/h1eWmKmGCb

Welcome to the club, TOI-674 b. 

A recent discovery places this exoplanet in an exclusive club – planets with water vapor in their atmospheres!

Learn more about this Hubble & Transiting Exoplanet Survey Satellite discovery: https://t.co/csYtfXTdIU https://t.co/TLLgAUslOh

Did you know Hubble helped build @NASAWebb’s “to-do” list? 

One of Webb’s upcoming projects is called COSMOS-Webb, which will observe a patch of sky containing half a million galaxies – building on a huge survey that Hubble started in 2002.

Learn more: https://t.co/jcWSHcmKKX https://t.co/el8M1mdadh

You’ve heard of spiral galaxies… but have you heard of prototypical barred spiral galaxies?

Now you have! This #HubbleClassic image shows NGC 1672, a galaxy with spiral arms that attach to two ends of a bar of stars that enclose the galaxy’s nucleus: https://t.co/Rv2aaPh3ny https://t.co/Y9Igu4T7nA

Building on a classic 

When it launches in 2027, @NASARoman will make wide observations of our universe with its enormous field of view.

One such observation could build upon Hubble's iconic Ultra Deep Field image, as seen simulated here!

More: https://t.co/iF5vaOpG7Z https://t.co/dqke05ta5X

We’ll leave you to *reflect* on all that.

Hubble & Webb, with their complementary abilities to see across the electromagnetic spectrum, will work together to give us a more complete view of the universe.

Learn more: https://t.co/tn1KsflAvt https://t.co/GLnNJc9y3B

Temperature 🥶

Hubble is optimized to observe ultraviolet & visible light, so its primary mirror doesn’t have to be as cold as Webb’s.

But to detect faint infrared light, Webb’s mirrors have to be around -364 degree F! (Image shows mirrors getting prepped for cyrogenic testing) https://t.co/kvG6uNKXNR

Hubble’s primary mirror is made of one large piece of Ultra-Low Expansion Glass that is coated with thin layers of aluminum and magnesium fluoride.

Webb’s 18 mirror segments are covered in a thin, reflective layer of gold, which reflects infrared light more efficiently. https://t.co/x13WDMIElZ

Despite its larger size, Webb will deliver about the same resolution in near-infrared light as Hubble attains in visible light.

The two telescopes will be able to “double-team” their observations of objects to provide us with spectacular, broad-spectrum views! https://t.co/EmwiDjbaiA

Size 

Webb’s primary mirror stretches ~21 ft (6.5 meters) across, while Hubble’s is ~8 ft (2.4 meters) across.

That gives Webb more than six times the light collecting area than Hubble has! https://t.co/7CaAvXIFUf

Have you heard the buzz? 

@NASAWebb’s “honeycomb”-like mirror unfolded and the telescope is fully deployed!

Like Hubble, Webb is a reflecting telescope – meaning that it gathers light using huge mirrors rather than lenses. So how do the mirrors on Hubble and Webb compare?  https://t.co/MhyNmJixIx

RT @NASA:  New milestones for our @NASAWebb telescope as it prepares to #UnfoldTheUniverse, and @NASAHubble passes the one-billion-second mark in its remarkable mission in space. These stories and more in the latest episode of This Week at NASA: https://t.co/Ewsao6lXtY https://t.co/NzZnwYVDKI

It’s the first #HubbleFriday of the year!

This week’s image shows two galaxies that appear to be plunging into each other, but in reality, they're far apart – only our circumstance of perspective makes them look as if they’re colliding.

Read more: https://t.co/5kQqcYZDwU https://t.co/g5BIbb9eBj

Two views are better than one! 

This image of the Spirograph Nebula combines visible light data from Hubble and X-ray data from @chandraxray (seen in cyan).

Discover more: https://t.co/ccYTUv1VXb https://t.co/m6QKNykXva

Hello, 2022!

In this case, the nebula called NGC 2022.

This #HubbleClassic view shows a planetary nebula, which is a confusing name because it has nothing to do with planets! It’s really just a dying star casting off its outer layers of material. https://t.co/bXTLModJdY

RT @NASAGoddard: The Hubble Space Telescope released images in 2021 of galaxies, nebulae, and planets. 

@NASAHubble has orbited the Earth for over 30 years, and continues to observe the universe. 

Learn more about Hubble: https://t.co/4vEmqRVDIG https://t.co/DdrjOPfTNK

 When @NASAWebb begins science operations, it could see the universe’s first stars with the help of gravitational lensing.

This Hubble image shows the effect – this galaxy cluster's gravity is so strong that it magnified light from galaxies behind it: https://t.co/0hh43pW1f5 https://t.co/vEp22WCEJb

Happy New Year! 🥳

Hubble is kicking off 2022 with a major milestone. The telescope began operations 1 billion seconds ago! 

In that billion seconds, Hubble made more than 1.5 million observations and astronomers using Hubble data published more than 19,000 scientific papers. https://t.co/daK8V7liFB