Space
We summarize the week's scientific breakthroughs every Thursday.
- Astronomy
Weighing In on a Star: A stellar size limit
A new study suggests that no star in our galaxy can weigh more than 150 times the mass of the sun.
- Planetary Science
Slowpoke: Atmosphere put brakes on meteorite that formed famed crater
The extraterrestrial object that gouged out Arizona's Meteor Crater about 50,000 years ago struck at a speed much slower than most scientists had previously proposed.
- Astronomy
Radiation from a baby star
X-ray telescopes have captured the earliest and clearest view of the core of a gas cloud about to transform into a star.
- Planetary Science
Martian Landscaping: Spacecraft eyes evidence of a frozen sea
After analyzing images taken by the orbiting Mars Express spacecraft, researchers reported that a flat region near the Red Planet's equator holds a frozen ocean that was once the size of the North Sea.
- Astronomy
Nursery Pictures: Astronomers glimpse primordial clustering
Astronomers have found the earliest traces of galaxy clustering, from a period just 1 billion years after the birth of the universe.
- Astronomy
Hole power
New computer simulations and observations are adding to the evidence that supermassive black holes control the growth of the galaxies they inhabit, wielding an influence far beyond their gravitational grasp.
- Astronomy
Big Flash: Record-breaking explosion in outer space
The brightest flash of light ever recorded from beyond the solar system could help account for a puzzling group of extremely short-lived gamma-ray bursts from distant galaxies.
- Astronomy
Ghostly Galaxy: Massive, dark cloud intrigues scientists
Astronomers say they have found the only known galaxy devoid of stars.
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- Planetary Science
Spying Saturn’s Light Show: Anomalous aurora dazzles scientists
The dancing lights that paint Saturn's sky stands out from all other auroras observed in the solar system.
- Astronomy
Images from the Edge
Examining nearby reaches of the universe at ultraviolet wavelengths, a recently launched spacecraft has found regions of star birth in unexpected places.
- Planetary Science
Meteorite on Mars
One of the twin rovers on Mars has discovered the first meteorite ever found on a planet other than Earth.
