Space
- 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/.
- Planetary Science
Craft tracks giant dust storm on Mars
The largest dust storm observed on Mars in 25 years is now engulfing the Red Planet.
- 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.
- Astronomy
Bow-wowing them with radar
The sharpest radar image ever of an asteroid shows features on 1999 KW4 as small as 7.5 meters—about the length of a stretch limo.
- Planetary Science
Space Flight Basics
For armchair space explorers, NASA’s Jet Propulsion Laboratory offers a tutorial on how to operate an interplanetary space mission. Originally created a decade ago, the newly updated guide includes information on spacecraft engineering, mission design, trajectories, launch, navigation, telecommunications, and much more. Go to: http://www.jpl.nasa.gov/basics/
- Astronomy
Landing data confirm Eros’ primitive nature
Gamma rays detected by the NEAR Shoemaker spacecraft after it landed on asteroid 433 Eros add to evidence that the rock is unaltered since the birth of the solar system.
- Astronomy
A comet continues to crumble
Ever since astronomers first spied a comet 6 months ago and officially dubbed it C/2001 A2, the icy body has been breaking apart.
- Astronomy
A new giant in the Kuiper belt
An icy body in the Kuiper belt, a reservoir of comets in the solar system beyond Neptune, is a record setter for the belt and bigger than Pluto's moon Charon.
- Astronomy
Andromeda feasts on its satellite galaxies
A new study reveals that the Andromeda galaxy, the nearest large galaxy to the Milky Way, is a cannibal, devouring its tiny galactic neighbors.
- Astronomy
An Illuminating Journey
Astronomers are beginning to use the cosmic microwave background, the remnant glow from the Big Bang, in a dramatically different way: Instead of treating it as a snapshot of the early universe, researchers are proposing to employ the radiation as a flashlight that probes the evolution of structure in the universe over its entire 13-billion-year history.
