Behind the Scenes Videos

Watch what it was like behind the scenes during Servicing Mission 4 with Mary Estación.

Astronauts Upgrade Hubble

Images, videos and an interactive feature on the historic mission.

ESO 498-G5's spiral arms wind all the way into the center, so its core looks like a bit like a miniature spiral galaxy.

Hubble caught this close up of the northern half of NGC891, approximately 30 million light-years away in the constellation of Andromeda.

Observations with NASA's Chandra X-ray Observatory may help astronomers understand why some supernovas are much more powerful than others.

Hubble cannot look at the sun directly, so astronomers are planning to point the telescope at the Earth's moon, using it as a mirror to capture ...

Zooming into the central part of a galaxy cluster — one of the largest structures of the Universe — is rather like looking at the eye of the storm.

NASA Schedules Hubble Science Update For May 31

NASA will host a Science Update Thursday, May 31, at 1:00 p.m. EDT to discuss new Hubble Space Telescope observations that allow astronomers to predict with certainty the next major cosmic event to affect our entire galaxy, sun, and solar system.
Astronomical Database Named for Sen. Mikulski

The archive is named in honor of the United States Senator from Maryland for her career-long achievements and for becoming the longest-serving woman in U.S. Congressional history.
Hubble Space Telescope Contributes to Nobel Prize in Physics

Observations made by Hubble of a special type of supernovae contributed to research on the expansion of the universe that was honored with the 2011 Nobel Prize in Physics.
Hubble Engineer Becomes a Knight

A longtime engineer for the Hubble Space Telescope received knighthood from Queen Beatrix of the Netherlands in June.

Age of the Universe →

Thanks in part to the Hubble Space Telescope, we know the universe is 13.7 billion years old.
At Galaxies' Cores →

Nearly all galaxies may harbor supermassive black holes.
How Planets Form

The Hubble Space Telescope has helped scientists determine the process of how planets are born.
Extrasolar Organic Matter

The Hubble Space Telescope detected the first organic molecule discovered on a planet outside our solar system.
Dark Energy →

The Hubble Space Telescope detected a distant supernova that suggests the universe only recently began speeding up.
Plutonian Moons

Hubble has found three moons around dwarf planet Pluto.

Return to Hubble

Coming soon to a telescope near you ...
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Hubble Gallery →

Hubble images of planets, stars, galaxies and more.
Tonight's Sky →

Your guide to constellations, planets, events and more.
Behind the Pictures →

Do Hubble pictures look like the objects would if we saw them ourselves?
HubbleWatch →

Learn more about astronomy in our weekly Hubble Podcasts!

Edwin P. Hubble

The work of American astronomer Edwin Powell Hubble revolutionized our understanding of the size and structure of the universe.

Hubble 20th Anniversary Resources

Hubble's discoveries over the course of its 20 years in orbit have made this telescope a household name. Visit this page for material related to Hubble's 20th anniversary.