1181–1200 of 1,206 results

Astronomy & Observing News

Astro Image in the News:
A Spectacular Light Echo

An erupting star in Monoceros spreads its light across surrounding gas and dust.

Astronomy & Observing News

How Bright Was History's Brightest Supernova?

The dazzling supernova of the year 1006 amazed the medieval world. Now astronomers have pinned down its distance and brightness.

Astronomy & Observing News

Catching Ancient Stardust

Tiny grains blown off from stars that existed before the solar system formed are sifting down all around us.

Astronomy & Observing News

Mapping the Big Bang

Results from NASA's MAP satellite strengthen the new cosmology.

Astronomy & Observing News

Exoplanet's Mass Pinned Down

For the first time, astronomers have measured a star's side-to-side wobble caused by an orbiting planet.

Celestial News & Events

Observing the Leonids

Here are some tips to help you observe the Leonid meteor shower.

Astronomy & Observing News

Cosmic Rays from the Kuiper Belt

The "anomalous cosmic rays" have finally had their origin pinned down — in the outer reaches of the solar system.

Astronomy & Observing News

Dark Matter Gets a Reality Check

There's no way to avoid it; galaxies really are surrounded by halos of unknown, invisible stuff.

Astronomy & Observing News

A Double Star's Planet

Astronomers have discovered the first planet that orbits one star of a close pair.

Astronomy & Observing News

Gamma-Ray Burst Caught in the Act

A fast worldwide alert enables astronomers to snag their best-observed gamma-ray burst ever.

Astronomy & Observing News

Midsize Black Holes in Midsize Star Clusters

Black holes with several thousand times the Sun's mass have unexpectedly turned up in the cores of globular clusters.

Astronomy & Observing News

[email protected] Spells Out New Plans

Your computer may soon be able to join a widened search for ETs. Above: The Parkes radio telescope in Australia.

Astronomy & Observing News

An Average Perseid Meteor Shower

This year's Perseids performed just about as expected, though hazy, humid skies hindered the view from many places.

Astronomy & Observing News

Not a Quark Star After All?

A weird object announced last April appears to be an ordinary neutron star, not a strange new type of matter.

Astronomy & Observing News

Omega Centauri's Checkered Past

Signs of swallowed star groups have turned up in this great globular cluster. . . which may not really be a globular cluster at all.

Astronomy & Observing News

A Familiar Orbit in a New Crop of Exoplanets

A well-behaved giant planet orbits the Sunlike star 55 Cancri at the same distance Jupiter orbits the Sun.

Celestial News & Events

Moon Pairs with Jupiter and Venus

The crescent Moon forms two beautiful conjunctions with the two brightest planets during twilight Wednesday and Thursday.

Astronomy & Observing News

Hubble's Infrared Camera Back in Business

Dead for three years, the Hubble Space Telescope's NICMOS camera is again providing infrared views of the universe.

Astronomy & Observing News

Big Bang Picture Sharpens Up

New, sharper maps of the cosmic microwave background radiation are telling astronomers they're on the right track.

Astronomy & Observing News

A Cyclic Universe?

Maybe the Big Bang wasn't the beginning, but only the latest in an endless cycle of destructions and rebirths.

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