Historic telescopes through the ages, from Galileo to the 21st century
Back in May 2009, the Hubble Space Telescope got its final tune-up. The seven astronauts of the STS-125 mission flew to Hubble on space shuttle Atlantis, grabbed the observatory with a robotic arm and pulled Hubble into the shuttle's open payload bay for repair...
A Q&A with Hubble Space Telescope senior project scientist David Leckrone
In an astronomy first, researchers image exoplanets orbiting two stars
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
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...
Whether peering into deep space or checking on human activity, spacecraft and satellites from days gone by are still on the job
Most people think of astronomy as the science of big things—"vastly, hugely, mind-bogglingly big," as Douglas Adams put it. But judging from last week's American Astronomical Society meeting in Washington, D.C., the most interesting things in astronomy these days are the small(ish) ones...
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
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.
Space shuttle Atlantis touched down safely yesterday morning at Edwards Air Force Base in California, wrapping up an ambitious and remarkably successful servicing mission to the Hubble Space Telescope...
The Hubble Space Telescope has had a long and illustrious run, helping to pin down the age of the universe and pointing the way to the existence of dark energy.
looks at a troubled history, some remarkable discoveries and the future of the instrument.
Distant supernovae are revealing the crucial time when the expansion of the universe changed from decelerating to accelerating
As they wait for the space telescope to be serviced one last time, astronomers reflect on its discoveries over the past 16 years
The mammoth infrared observatory, scheduled to launch in 2014, will look back to the first stars in the universe