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If the meteorite was as large as it seems to have been, we can compare it to the Hiroshima bomb.

The supermassive black hole at the center of the Milky Way Galaxy, known as Sagittarius A*, has a mass of more than 3.7 million times that of our sun. It is so dense that nothing can escape its gravitational pull, not even light. Therefore, Sagittarius A* cannot be seen directly, but its influence on nearby stars is clearly visible, and provides a signature as to what is happening inside the black hole according to researchers at Northwestern University and UCLA, who are performing the most comprehensive study of Sagittarius A* to date. Their work has provided the best evidence yet that a supermassive black hole does indeed exist at the center of the Milky Way.

As this review of the new Astro Sky 10" f/6 shows, a positive give and take between reviewer and manufacturer can yield valuable plusses for the our whole community.

University of Florida and JPL Astronomers have found the largest number of the most distant, youngest galaxy clusters yet -- a feat that will help us observe the developing universe when it was less than half its current age and still in its formative stages.

Molecules spewed outward from a dying star are confined into narrow jets by a tightly-wound magnetic field, according to astronomers who used the National Science Foundation's Very Long Baseline Array (VLBA) radio telescope to study an old star about 8,500 light-years from Earth. <b>NOTE: French, German, Italian, and Spanish translations follow...</b>

NASA's Hubble Space Telescope has captured the first-ever picture of a gravitationally lensed five star-like image of a single distant quasar. Although many examples of gravitational lensing have been observed, this "quintuple quasar" is the only case so far in which multiple quasar images are produced by an entire galaxy cluster acting as a gravitational lens.

This week's review contest winner thumbs through Sky and Telescope's Pocket Sky Atlas and gives us the Ebert and Roper on this new publication.

The editor is back in the saddle to oversee the review writer's weekly rodeo. We are pleased to Honor Timm Bottoni and Lee Spain for having cowboyed up a couple of fine reviews...

GAIA will be the most accurate optical space-based observatory ever built. GAIA ’s measurement accuracy is so great that if it were on the Moon, it could measure the thumbnail of a person on Earth. Due for launch in 2011, GAIA will continuously scan the sky from a point in space located at about 1.6 million kilometres away from the Earth, in the direction opposite to the Sun.

550 people of all ages each walked 2.2 miles in this unique true-to-scale solar system.

A Shootout between the 7.5mm Celestron Ultima and the 8mm TeleVue Plossl hits the bulls-eye as this week's review contest winner.

Everyday folks wowed by celestial wonders

Are you losing sleep at night because you're afraid that all life on Earth will suddenly be annihilated by a massive dose of gamma radiation from a close-by Gamma Ray Burst (GRB)? Well, astronomers at Ohio State University (OSU) have concluded that we can rest easy.

Some notes on the venerable C8 OTA by Celestron.

Hubble Space Telescope is providing astronomers with extraordinary views of Comet 73P/Schwassmann-Wachmann 3. <b>NOTE: French, German, Italian, and Spanish translations follow...</b>