Historic telescopes through the ages, from Galileo to the 21st century
A Q&A with Hubble Space Telescope senior project scientist David Leckrone
In an astronomy first, researchers image exoplanets orbiting two stars
Discovering a Dark Universe: A Q&A with Saul Perlmutter
Dark energy is pushing the universe apart at an ever faster rate. Astrophysicist Saul Perlmutter recounts the experimental approaches he took to make that discovery
Hubble's archive shows hidden exoplanet discovered 10 years later
Two teams of astronomers made headlines in November after announcing they had photographed planets orbiting regular stars other than our own sun. (Such bodies are known as extrasolar planets, or exoplanets.) One of those planets, Fomalhaut b, the companion to a star called Fomalhaut some 25 light-years away, was spotted by the Hubble Space Telescope; a star known as HR 8799, nearly 130 light-years distant, was found by ground-based observations to harbor a system of at least three planets...
Space Aged: 10 Spacecraft from Decades Past That Are Still Ticking [Slide Show]
Whether peering into deep space or checking on human activity, spacecraft and satellites from days gone by are still on the job
Messy space: Will orbiting trash threaten the Hubble repair mission?
In praise of small things: Second dispatch from the American Astronomical Society meeting
Dome Big Dome: Giant Observatories Augur New Era of Cosmology
When a new generation of giant ground-based telescopes comes online in the next decade, human eyes will see what no one has seen before
Astronomers Discover Icy World Far Past Pluto
What do we really know about the Kuiper belt? Fifth dispatch from the annual planets meeting
FAJARDO, Puerto Rico—It smacked of a cunning plan. The organizers of last week's planets conference put one of the best talks in the very last session of the very last day.
Having serviced Hubble one last time, space shuttle Atlantis lands safely
The space shuttle's 2009 mission to Hubble: Coming soon to a theater near you
Hubble hopes pinned to tricky remote-control reboot
Hubble Space Telescope clocks up 20 years
looks at a troubled history, some remarkable discoveries and the future of the instrument.
The Expanding Universe: From Slowdown to Speed Up
Distant supernovae are revealing the crucial time when the expansion of the universe changed from decelerating to accelerating
Hubble's Top 10
As they wait for the space telescope to be serviced one last time, astronomers reflect on its discoveries over the past 16 years
6 Fun Facts about the James Webb Space Telescope [Slide Show]
The mammoth infrared observatory, scheduled to launch in 2014, will look back to the first stars in the universe