5321–5340 of 6,020 results

Astronomy & Observing News

Disk Demolition Derby

An artist depicts the collision of two planetesimals in the disk around Vega. Such collisions, which generate huge amounts of dust, occurred frequently in the early days of our solar system's Kuiper Belt.Courtesy NASA / JPL-Caltech / T. Pyle (SSC / Caltech). Two teams of astronomers have reported signs of…

Astronomy & Observing News

Exoplanet Image Confirmed?

The pink dot in this Hubble Space Telescope infrared image might not look like a big deal, but in all likelihood it's a planetary-mass companion to the brown dwarf 2M 1207, whose location is marked by the gray circle.Courtesy NASA / ESA / Glenn H. Schneider, et al. Astronomers may…

Astronomy & Observing News

Astro News Briefs: January 3-9

First light for Swift instruments and a new solar telescope.

Astronomy & Observing News

Astro Image in the News:
Hubble Spies Twisted Spiral

unveiled this stunning image of NGC 1300, the 10th-magnitude barred spiral some 69 million light-years distant in the constellation Eridanus.

Astronomy & Observing News

A Black Hole Swarm

In this Chandra X-ray Observatory image of the galactic center, the four labeled sources are bright and variable. They are probably binary systems consisting of a stellar-mass black hole and a normal star. The Milky Way's central black hole, known as Sagittarius A*, is the bright spot above source C.Courtesy…

Astronomy & Observing News

Intriguing Iapetus

This Cassini image shows Iapetus's leading hemisphere, most of which is as dark as an asphalt parking lot. Scientists were amazed to find a giant ridge girdling at least one-third of the moon's circumference. The highest peaks along the ridge are about 20 kilometers (12 miles) high, which rivals Mars's…

Astronomy & Observing News

Earth Safe from Asteroid 2004 MN4

We should know by February whether the Near Earth Asteroid 2004 MN4 is a real threat.

Astronomy & Observing News

A Look Back at 2004

Just in case you've forgotten, we covered a lot of astronomical news throughout the past year.

Astronomy & Observing News

Astro Image in the News:
Iapetus Encountered

Cassini, the craft, was about 72,000 kilometers (44,700 miles) away from Iapetus when it snapped this up-close image of the pockmarked moon.

Astronomy & Observing News

Amateurs Detect Possible Exoplanet Ringlike Structure

This artist conception depicts a Jupiter-size planet transiting its host star at a close distance, as is the case with TrES-1. Amateur astronomer observations suggest that the planet might be surrounded by a cloud or torus of particles.S&T illustration by Steven A. Simpson. Amateur astronomers may have discovered a ringlike…

Celestial News & Events

A Beautiful Lunar Eclipse

Clear skies throughout much of the Americas and parts of Europe and Africa allowed millions of people to enjoy a beautiful lunar eclipse during the evening of Nov. 8–9, 2003.

Astronomy & Observing News

Astro Image in the News:
Huygens En Route to Titan

Courtesy NASA / JPL. Cassini captured this image of the Huygens probe (bright dot at the upper right) just 12 hours after it separated from the mothership at 2:00 Universal Time on December 25th. Huygens, built by the European Space Agency, will remain dormant until it approaches Saturn's cloud-enshrouded moon…

Celestial News & Events

The Geminids: An Exception to the Rule

The source of December's annual Geminid meteor shower is not what you might expect.

Astronomy & Observing News

Astro Image in the News:
Opportune Pictures

The Mars Exploration Rover, Opportunity, continues to image spectacular vistas.

Celestial News & Events

Comet Machholz Observed

Comet Machholz, C/2004 Q2, continues to brighten on schedule as it moves toward the northern sky.

Astronomy & Observing News

Making New Friends

This mosaic combines five Cassini images of Saturn's moon Dione. The moon's heavily cratered surface and grooved terrain are evident. The scale is 0.9 kilometer per pixel.Courtesy NASA / JPL / Space Science Institute. Scientists are beginning to digest a plethora of new images and data following Cassini's successful flybys…

Astronomy & Observing News

Yerkes On the Block

The University of Chicago soon may sell Yerkes Observatory and its surrounding acreage.

Astronomy & Observing News

NASA Chief Resigns

NASA administrator Sean O'Keefe, who ran the agency for three years, announced his resignation late yesterday in a letter to President George W. Bush.

Astronomy & Observing News

Astro Image in the News:
Return to Titan

Courtesy NASA/JPL/Space Science Institute. Cassini captured this stunning image of the surface of Saturn's largest moon, Titan, as it approached on December 11th during its second flyby. The bright region toward the bottom of the image has been dubbed "Xanadu" by scientists. Cassini captured this scene from 810,000 kilometers (503,000…