#Hubble30 In 1994 Hubble released this view of galaxy M100 taken by the Wide Field and Planetary Camera 2. Installed during Hubble’s first servicing mission, the camera had corrective optics, allowing it to image the galaxy with unprecedented clarity: https://t.co/vw0EUHIOT7 https://t.co/XRw9HAzeCb

#Hubble30 In 1993 Hubble released this view of the Cygnus Loop supernova remnant, the edge of a bubble-like blast wave from a stellar explosion. The blast wave is slamming into clouds of gas, compressing and heating them, which causes them to glow: https://t.co/IXKcbpnhvM https://t.co/DxDYYm8451

#Hubble30 In 1992 Hubble investigated the supermassive black hole in galaxy NGC 4261. This debris disk, which is 300 light-years across, surrounds the black hole. Material is heated to millions of degrees as it is pulled toward the black hole: https://t.co/meXKU9mMNw https://t.co/Sj6u4hFnry

#HubbleFriday NGC 4618 was discovered in 1787 by astronomer William Herschel, who thought the fuzzy-looking object might be a distant star cluster. In reality, it's a one-armed barred spiral galaxy about 21 million light-years from our galaxy: https://t.co/CfQLB2eVZ2 https://t.co/DIKbasMWxR

#Hubble30 In 1991 Hubble released its first true-color image of Jupiter, capturing the planet in unprecedented detail. Since then, regular observations of the gas giant have allowed scientists to study the dynamic cloud system in its atmosphere: https://t.co/TIdAt6VJxb https://t.co/HSrQY8F9hJ

#Hubble30 For the next 30 days, we’ll be counting down to Hubble’s 30th anniversary, sharing one great image for each year of Hubble’s career. We’ll start today with an image from 1991 to celebrate Hubble’s first birthday & end with 2020, when we’ll reveal Hubble’s newest image! https://t.co/U3kA6JDrHR

#Hubble30 What cosmic wonder did @NASAHubble view on your birthday? Find out here & then share your Hubble birthday image with your friends: https://t.co/K5VHo3T34q (Works for anniversaries & other dates, too!) https://t.co/VVbOsoNKZj

Selections have been made for the NASA Hubble Fellowship Program enabling 24 outstanding young scientists to pursue independent research in any area of NASA astrophysics: https://t.co/Ncc9JiISaW https://t.co/11hdnbVIoa

#HubbleClassic A cluster of brilliant blue stars sparkle within a cloud of gas and dust, which recently gave birth to the stars. Called NGC 602, the cluster resides in the Small Magellanic Cloud, a dwarf galaxy neighboring our Milky Way: https://t.co/qN0Re4JlVN.  . https://t.co/kbmkDuVvfl

#HubbleFriday Galaxy NGC 4237 is classified as a flocculent spiral galaxy. Its spiral arms are not clearly distinguishable from each other but are instead patchy & discontinuous. This gives the galaxy a fluffy appearance, somewhat resembling fluffy cotton: https://t.co/hh6jZ36q7R https://t.co/g1TcjZD5xX

Using Hubble, astronomers have discovered that the pressure from some supermassive black holes can push material away at a fraction of the speed of light. Depicted in this illustration, these outflows are the most energetic ever witnessed in the universe: https://t.co/kA525J8L6x https://t.co/DcTA3jNH5P

This scene of stellar creation, captured by Hubble, sits near the outskirts of the Tarantula Nebula. This cloud of gas and dust, as well as the many young and massive stars surrounding it, is the perfect laboratory to study the origin of massive stars: https://t.co/VhOiusmZBB https://t.co/7lovUOGrPD

#HubbleClassic Happy #StPatricksDay! Hubble spied a ghostly green blob of gas floating near the spiral galaxy IC 2497. Called Hanny's Voorwerp ("Hanny's Object" in Dutch), it's part of a streamer of gas stretching 300,000 light-years around the galaxy: https://t.co/6gedrah5RC https://t.co/wMMd4Wj5oL

#HubbleFriday In true Friday the 13th style, a star appears to have been torn apart and devoured by a ravenous supermassive black hole at the center of spiral galaxy NGC 1589. Hubble is investigating the alleged cosmic crime: https://t.co/EIhoDcw2vT https://t.co/rb26OluNbU

#HubbleClassic An expanding cloud of gas given off by a dying Sun-like star, this planetary nebula named NGC 3132 is also known as the Southern Ring Nebula. Found in the constellation Vela, it can be seen by amateur astronomers in the Southern Hemisphere: https://t.co/pW1UCZqfDY https://t.co/90kqbiwCS4

Astronomers using Hubble data have turned to slime mold, simple single-cell organisms, to help them trace the universe's large-scale network of filaments known as the cosmic web: https://t.co/CEOEdfQv2D https://t.co/W0CtYiovlm

Hubble Senior Project Scientist Jennifer Wiseman and astrophysicist @neiltyson will answer questions about Hubble's 30 years of exploration in an upcoming episode of @StarTalkRadio. Questions can be submitted using #CQHubble30 before 10 pm ET on March 10. https://t.co/zIaBO52mAN

#HubbleFriday Its orientation to us, while not exactly face-on, allows us to see NGC 3887’s spiral arms and central bulge in detail, making it an ideal target for studying a spiral galaxy’s winding arms and the stars within them: https://t.co/c2uC03mZGk https://t.co/JGnJMNGLBU

It's #WorldWildlifeDay! Hubble often observes celestial objects that are named after animals or look like animals when some imagination is applied. This #HubbleClassic shows two galaxies, known as Arp 142, that resemble a bird protecting its egg: https://t.co/hFw0qlAUq0 https://t.co/7hEAUygBWy

#HubbleFriday Spiral galaxy NGC 691 was one of thousands of objects discovered by astronomer William Herschel during his prolific decades-long career — almost 200 years before the Hubble Space Telescope was even launched: https://t.co/D4CdqaTryU https://t.co/g6K4sKTn1o