Astronomy

Astronomy

When Branes Collide

A controversial new theory proposes that our universe existed as a cold, featureless void for eons, until a parallel universe floating through a hidden fifth dimension crashed into it, igniting the Big Bang.

Astronomy

X rays trace fierce stellar winds

A high-resolution X-ray view of the Rosette nebula, a nearby star-forming region, has revealed for the first time that the stellar winds from massive stars heat surrounding gas to a scorching 6 million kelvins.

Astronomy

Galaxy’s Black Hole: X Rays Mark Spot

An X-ray outburst from the center of our galaxy is providing compelling new evidence that a monster black hole lurks at the Milky Way's core.

Astronomy

Shocks jolt jet set galaxy, X rays reveal

A new image of the nearby galaxy Centaurus A reveals the first details of a phenomenon associated with the core of many galaxies: a huge jet of high-energy particles shooting out from a supermassive black hole.

Astronomy

Astronomers spy familiar planetary system

Studying a star in the Big Dipper, astronomers have for the first time found a planetary system that reminds them of home.

Astronomy

Eros: The movie

Close-up views of the asteroid 433 Eros, showing jagged rocks, fields of boulders, and debris-filled craters, are featured in a minute-long movie.

Astronomy

Senior star may have comets

Astronomers have found what could be the first evidence of water-bearing objects that orbit a star other than the sun.

Astronomy

Light’s Debut: Good Morning, Starshine!

Astronomers have at last detected signs of one of the earliest and least-understood eras in the universe: the murky time just before the first stars and quasars flooded the cosmos with light.

Astronomy

Anybody Out There?

This elaborate Web site brings together a wide variety of resources devoted to the question of life in the universe. Mounted by the European Organization for Nuclear Research (CERN) and other European agencies, the site serves as home base for a competition aimed at eliciting responses from European students to the possibility of extraterrestrial life. […]

Astronomy

Ground-based telescope detects star’s corona

Astronomers using a ground-based telescope have for the first time observed near-ultraviolet light from the corona of a star other than our sun.

Astronomy

When Galaxies Collide

Dramatic images from the largest computer simulation ever of a plausible collision between the Milky Way and Andromeda galaxies highlight this report from the National Partnership for Advanced Computational Infrastructure and the San Diego Supercomputer Center. Astrophysicist John Dubinski describes the science underlying the computations. Go to: http://www.npaci.edu/online/v4.9/galaxies2.html and http://www.cita.utoronto.ca/~dubinski/tflops/.

Astronomy

A Rocky Bicentennial

Mounting evidence that many asteroids aren't solid rock but collections of loosely bound fragments could have far-reaching implications for elucidating their internal structure, understanding planet formation, and developing strategies to mitigate the threat of one striking Earth.