#HubbleClassic Thousands of sparkling young stars are nestled within the giant nebula NGC 3603. About 20,000 light-years away, this stellar "jewel box" is one of the most massive young star clusters in the Milky Way Galaxy: https://t.co/m3gAnY9JmE https://t.co/SJXez0BLQl

#HubbleFriday Although it looks more like an entity seen through a microscope than a telescope, this rounded object, named NGC 2022, is certainly not algae or tiny, blobby jellyfish  Instead, it's an orb of gas, cast off by an aging star: https://t.co/FjGxcGInUo https://t.co/2qebSitOU3

RT @airandspace: Today in 2007, @NASAHubble captured this rare edge-on view of the ring system of Uranus. 

With the planet's 84-year orbit, these rings are only visible to astronomers observing from Earth every 42 years and were not known to exist in 1965. #IdeasThatDefy https://t.co/oBkuj4LUUS

Happy #LeftHandersDay! Hubble astronaut John Grunsfeld is left handed, which made him especially good at getting to 36 hard-to-reach connectors on the left side of Hubble’s power control unit when it was replaced in 2002. Hear more about it: https://t.co/ZW8HQUyKcd #HubbleClassic https://t.co/VLDErtmHtk

Happy #BookLoversDay! Do you know about our Hubble Focus e-book series? Check out the free, downloadable collection of e-books including our brand new Hubble Focus: Galaxies through Space and Time: https://t.co/Q2eFvot9Jv https://t.co/gUIiikyu4F

#HubbleFriday This galactic duo is known as UGC 2369. The galaxies are interacting, meaning that their mutual gravitational attraction is pulling them closer and closer together and distorting their shapes in the process: https://t.co/S4PTdRFpdd https://t.co/F0wIENfjRf

#Jupiter is the king of the solar system, more massive than all other solar-system planets combined. Although astronomers have been observing the gas-giant planet for hundreds of years, it still remains a mysterious world: https://t.co/sRE30L9LVh https://t.co/6J2DCzykQZ

It's #NationalLighthouseDay! Pulsars are cosmic lighthouses, dense stars that sweep beams of radiation across the universe as they spin. This #HubbleClassic, combining 9 months of Hubble images, shows rings, wisps & jets around the Crab Nebula pulsar. https://t.co/o8y8HRnSVo

#HubbleFriday Believe it or not, this long, luminous streak is a spiral galaxy like our Milky Way. But how could that be? It turns out that we see this galaxy, named NGC 3432, oriented directly edge-on to us from our vantage point here on Earth: https://t.co/uBxvIFuoo5 https://t.co/kujK9X6yBb

This illustration shows an exoplanet losing magnesium & iron gas from its atmosphere. This is the first time that "heavy metals"—elements more massive than hydrogen & helium—have been detected escaping from a large gaseous exoplanet orbiting near its star: https://t.co/YeERK4MZbV https://t.co/2ECJAlFsv2

RT @NASAblueshift: You've never heard a musical instrument like this galaxy cluster! Click to hear what happens when we translate the light captured in this gorgeous @NASAHubble image into sound.  https://t.co/Mqz5dYuugx #UncommonMusicalInstrumentDay https://t.co/xua0yiAwuN

This #HubbleClassic shows an area where stars are forming, not in our galaxy but in a nearby one known as the Small Magellanic Cloud. A brilliant star cluster called NGC 346 is swaddled in clouds of gas & dust from which the stars formed: https://t.co/hZCqO6q4ND https://t.co/rMHaszWIyz

#HubbleFriday Every now and then, Hubble glimpses a common object in an interesting or unusual way. This sharply angled perspective can make it seem as if observers are craning to see over NGC3169's spiral arms into the galaxy's bright center: https://t.co/IfpBi1QAOE https://t.co/KA2e4YPT15

#HubbleClassic The Pinwheel Galaxy (M101) holds about a trillion stars and is bigger than our own Milky Way. Find out what Hubble has learned lately about this and other galaxies in our new ebook, Hubble Focus: Galaxies through Space and Time: https://t.co/l2wuNes4uZ https://t.co/p4dvYYztS9

#HubbleFriday The near-perfect symmetry on display here reveals the incredible complexity of galaxy NGC2985. Multiple spiral arms widen as they whirl outward from the galaxy’s bright core, slowly fading until they disappear into the emptiness of space: https://t.co/wrms4WeSpi https://t.co/zm86q8V1jR

A new measurement of how fast the universe is expanding has been made! The revised measurement falls in the center of a hotly debated question in astrophysics that may lead to a new interpretation of the universe's fundamental properties: https://t.co/zgXyrBUx1G https://t.co/wepbkG6AOx

We are going forward to the Moon by 2024, but did you know that back in 2005, Dr. Jim Garvin and his team of scientists pointed the Hubble Space Telescope at our nearest celestial neighbor for a very important reason? https://t.co/FAvwbt1TgR

#HubbleFriday NGC1156 is a dwarf irregular galaxy, meaning it lacks a clear spiral or rounded shape. Some pockets of gas rotate in the opposite direction to the rest of the galaxy, suggesting there has been an encounter with another galaxy in it's past: https://t.co/MIzwGh44xw https://t.co/NcEOy153Jc

As if black holes weren't mysterious enough, astronomers using Hubble have found an unexpected thin disk of material furiously whirling around a supermassive black hole at the heart of spiral galaxy NGC 3147, located 130 million light-years away: https://t.co/fYO30O58hg https://t.co/0lCFkxEwL3

In this #HubbleClassic, the light from distant galaxies is being bent & stretched by gravity into weird arcs and shapes, including one that looks like an invading space alien. Check out Hubble pictures of this "gravitational lensing" phenomenon at: https://t.co/4bPrVruFRg https://t.co/vSgQ6bBCZM