Space
We summarize the week's scientific breakthroughs every Thursday.
- Astronomy
Mini Solar Systems? Astronomers find disks around planet-size objects
Disks with the potential to form planets, or at least moons, have been found orbiting objects outside the solar system that themselves are no heftier than planets.
- Planetary Science
The sands of Titan
Although the surface of Saturn's moon Titan is cold enough to freeze methane, it has sand dunes like those in the Arabian Desert, according to radar images taken by the Cassini spacecraft.
- Astronomy
Safe from a Heavenly Doom: Gamma-ray bursts not a threat to Earth
Gamma-ray bursts are likely to occur in the Milky Way.
- Planetary Science
Hubble eyes Jupiter’s second red spot
Hubble Space Telescope images are providing astronomers with the sharpest views yet of a new red spot on Jupiter.
- Astronomy
Crust on a star
By analyzing X rays generated by the rumblings of a neutron star 40,000 light-years from Earth, astronomers have estimated the thickness of the dense star's crust.
- Astronomy
Big Breakup: That’s the way the comet crumbles
Scores of telescopes are watching the continuing breakup of a comet as it nears the sun.
- Planetary Science
The Whole Enceladus
Saturn's moon Enceladus has become the hottest new place to look for life in the chilly outer solar system.
- Planetary Science
The Mysterious Smell of Moondust
Long after the last Apollo astronaut left the moon, a mystery lingers: Why does moondust smell like gunpowder? In this account, astronauts describe the surprising smell and taste of moondust, which they experienced firsthand inside their lunar landers. The dust gave one astronaut a case of hay fever. Go to: http://science.nasa.gov/headlines/y2006/30jan_smellofmoondust.htm
- Astronomy
Energy-Saving Space Engines: Black holes can be green
Some seemingly quiet black holes are actually efficient engines that emit jets of high-energy particles.
- Astronomy
Crash: Ripples of space-time debut in black hole simulations
Two teams have for the first time successfully simulated the merger of two black holes and the event's production of gravitational waves.
- Planetary Science
Ice among the rocks
A newly discovered trio of icy comets, hidden among the thousands of rocks in the main asteroid belt, may be part of a previously unknown class and a primary source of water for the dry, early Earth.
- Planetary Science
Brilliant! Tenth planet turns out to be a shiner
Xena, unofficially called the 10th planet, is the second-most-shiny known object in the solar system.
