Astronomy
- Astronomy
Old Stars Even Older: Determining a new age for the universe
Using particles accelerators to mimic the conditions inside stars, two independent research groups have found evidence that the most-ancient known stars are about a billion years older than astronomers had estimated.
- Astronomy
Before the big one hits
The next time you hear about an asteroid or comet about to hit Earth, you can go to a new Internet site to find out where the collision will be and how much damage will occur.
- Astronomy
Windy endeavor
In early April, an Earth-orbiting satellite closed its doors after more than 2 years of collecting ions from the solar wind.
- Astronomy
Dark Doings
A slew of new and proposed experiments, ranging from the cosmic to the subatomic scale, may shed light on why the expansion of the universe is speeding up.
- Astronomy
Back to the Beginning: Hubble’s infrared camera goes the distance
Using the Hubble Space Telescope, researchers have identified 26 galaxies that may be the youngest and most distant known.
- Astronomy
Closing In on a Monster: A black hole’s dusty environs show themselves
The first clear picture of the immediate surroundings of a supermassive black hole confirms that these gravitational monsters hide behind thick belts of dust.
- Astronomy
Puzzle on the Edge: The moon that isn’t there
Contrary to predictions, Sedna, the most distant object known in the solar system, does not appear to have a moon.
- Astronomy
A galaxy that goes the distance?
Aided by a cosmic magnifying glass, astronomers may have found the most distant galaxy known, a body that appears to reside 13.2 billion light-years from Earth.
- Astronomy
Rare Passage: Crab’s X rays probe Titan
Observing a rare celestial alignment, astronomers have made the first X-ray measurement of the atmosphere of Saturn's moon Titan.
- Astronomy
Sizing up a black hole
Astronomers are closing in on the size of the supermassive black hole that lies at our galaxy's center.
- Astronomy
Shades of Venus
On June 8, for the first time in 122 years, the silhouette of Venus will move across the face of the sun.
- Astronomy
Foraging among the Galaxies: Andromeda’s dining habits are documented
A new survey is adding to the evidence that Andromeda, the Milky Way’s sister galaxy, has not only grown bigger in the past by feasting on smaller galaxies but is continuing to do so.
