Where’s the dark matter? 

Astronomers were puzzled when Hubble uncovered a galaxy without dark matter. But new data explains that another galaxy's gravitational forces could've stripped away the dark matter before the galaxy's stars felt any effects: https://t.co/3jh8k5el4R https://t.co/hlHPK8yx9G

Released #OTD 20 years ago, this #HubbleClassic zooms into the center of the Circinus Galaxy, which hosts a monster black hole. The black hole is pumping hot gas out of the galaxy's core, forming the purple-colored streamers near the top of the image: https://t.co/K2hRLMvc57 https://t.co/UYEWG1rpo6

Happy #BlackHoleFriday! 

Not even light can escape a black hole, but Hubble can observe the effects of black holes on our universe. In this video, discover how Hubble helps us understand more about these mysterious cosmic objects!

For more: https://t.co/tXdwanhFBx https://t.co/LWxVJV3MaV

The galaxy in this #HubbleFriday image, NGC 2770, has been home to four different supernovae!

Supernovae involve a dying star. These stars become unbalanced, lose control, and explode, briefly shining as bright as an entire galaxy before fading away: https://t.co/XDfIuT2xoQ https://t.co/FgyFwjhx59

RT @NASAUniverse: Do you see a turkey in this Orion Nebula image from @NASAHubble ... or is it just us? 🦃 

#HappyThanksgiving #GobbleGobbleGobble https://t.co/Coovsp57Z4

https://t.co/oLqHBetr7m

#HubbleTrivia time! Above Earth’s murky atmosphere, Hubble gets a clear view of the universe. The orbiting telescope's primary mirror gathers light from the cosmos and directs it toward its scientific instruments.

How wide is Hubble's primary mirror?

The video has the answer!

About 8,000 light-years away, a cluster of young stars called Pismis 24 unleashes intense radiation and winds, carving out a cavity in the nebula where the stars formed. This #HubbleClassic shows the cluster and part of the nebula, called NGC 6357: https://t.co/7Ts478e6Eg https://t.co/Aj8I7BiE2y

Hubble was designed to be visited in space by astronauts to perform repairs, replace parts, and update its technology with new instruments!

‍ Between 1993 and 2009, there were five servicing missions, which paved the way for Hubble’s continued success. #UniqueTalentDay https://t.co/6EXE2xgplg

Guess what? This Friday is Black Hole Friday! Check back here (and follow along with @NASAUniverse) to learn more about black holes on November 27.

This is an image of spiral galaxy NGC 3147, captured by Hubble.

  What you can’t see is the supermassive black hole at its center that weighs ~250 million times the mass of our Sun!

Learn more about black holes in this episode of Curious Universe: https://t.co/qREcbwdTG9 https://t.co/EZD5PtyUqH

#OTD in 1998, Hubble unveiled this image of the Hubble Deep Field South, which featured thousands of dazzling, never-before-seen galaxies. It took a 10-day-long observation to capture this patch of the universe, near the south celestial pole.

Learn more: https://t.co/dNvEPMJlGF https://t.co/ITKeFriyvV

RT @NASAhistory: Happy #birthday to astronomer Edwin Hubble, born #OTD in 1889. Hubble proved that the universe contains multiple galaxies, rather than just the Milky Way. He's the namesake of @NASAHubble! Learn more about his life here: https://t.co/RoxotLaSyF https://t.co/iT4iLtgmtf

What did Hubble see on your birthday? 

Today is the birthday of our namesake, Edwin Hubble! Take a look at what Hubble saw on November 20. Pictured here, Arp 148 is the aftermath of an encounter between two galaxies. 

Find your Hubble image here: https://t.co/v1u0dzgnos https://t.co/nvK88ajn4T

Happy birthday, Edwin Hubble! 

Our namesake made groundbreaking discoveries in the field of astronomy, just as the telescope named for him has done over the past 30 years. In this video, learn more about the Hubble Space Telescope’s voyage of discovery. https://t.co/HQA7Vsn1PF

It's Friday! To kick off the weekend, here’s a Hubble image of the galaxy UGC 12588. Though classified as a spiral galaxy, its arms are faint – the clearest view of them comes from the blue stars sprinkled around the galaxy’s edges: https://t.co/SuypRQESIj
 
#HubbleFriday https://t.co/9zRya5R0D0

Bright rays and dark shadows are seen beaming out of the center of galaxy IC 5063, located 156 million light-years away. Astronomers suggest that a ring of dusty material surrounding the black hole at the galaxy’s core may be casting its shadow into space: https://t.co/Asgts0Mxt3 https://t.co/LqJUu1x3uv

https://t.co/Ww8PgzIS58

Let's check in with the largest planet in our solar system for this week’s #HubbleTrivia! 

What has Hubble helped reveal about Jupiter’s Great Red Spot? 🤔

(The video in the thread has the answer!)

This stunning #HubbleClassic features galaxy M106 and its unusual set of spiral arms. It's a collaboration between Hubble and amateur astronomers, combining observations from Hubble and from astrophotographers on the ground: https://t.co/RvSbNcP9lH https://t.co/fvas3QIn6H