Latest articles by Ker Than
Hidden Black Holes Revealed
Scientists discover a new type of "invisible" supermassive black hole.
Quadruple Sunsets Possible on Other Worlds
A new study suggests planets could have up to four suns.
Black Holes Devour Matter Like Piranhas
Supermassive black holes grow more rapidly in young galaxy clusters.
Intrepid Mars Rovers Just Won't Give Up
The rovers have lasted longer, and done more, than anyone expected.
Mars Rovers Weather Worst of Dust Storms
The rovers' batteries are fully charged and light levels have increased.
Biggest Cosmic Collisions Occur Faster Than Expected
The clusters in Abell 576 are estimated to be crashing into one another at over 7 million miles per hour.
How Solar Systems are Organized
Most gas giants reside close to their stars, a new study suggests.
Martian Dust Storm Creeps North
New data reveal the extent of the dust storms that have been raging on Mars.
'Clear Signs of Water' on Distant Planet
Scientists find the best evidence yet that exoplanets are also rich in water.
NASA Spacecraft Set to Study Mars' Icy North Pole
Preparations are on track for an Aug. 3 launch of NASA's Phoenix lander.
Why Some Huge Planets Hug Stars So Tight
Disc instabilities cause gas to flow inward toward stars, dragging planets along with them.
Phoenix Mars Lander Prepared to Weather Dust Storms
Scientists downplay concerns that dust storms will affect NASA's next Mars mission.
Scientists: Watch for Weird Life From Beyond
If we encountered alien life, would we recognize it?
Key to Giant Space Sponge Revealed
Studies shed new light on one of our solar system's strangest objects.
How NASA's Dawn Spacecraft Will Explore Solar System's Origin
Dawn will explore two mini-worlds for clues to our solar system’s origins.
24 Extra Hours in Space: What's an Astronaut to Do?
What do astronauts do when bad weather gives them an extra day in space?
Amazing New Mirror Reflects Ambition for Lunar Telescope
Future Moon telescope lenses could be made of silver-coated liquids.
Hopes Dashed for Life on Distant Planet
A 'Goldilocks' planet hailed as the first world outside our solar system capable of supporting life might actually be too hot.
Boring Saturn Moons Lively After All
Streams of hot gas swirling around Saturn have been traced to two icy moons previously thought to be geologically dead worlds.
Dwarf Planet Outweighs Pluto
The dwarf planet that forced astronomers to strip Pluto of its planethood is not only bigger than the former ninth planet, but also much more massive, a new study finds.
NASA Mulls Possible Spacewalk Repair for Shuttle's Torn Blanket
NASA engineers are discussing a possible spacewalk repair for a damaged area of the space shuttle Atlantis' heat shield.
Orbital Rendezvous: Shuttle Astronauts Arrive at Space Station
After a two-day orbital chase, NASA's shuttle Atlantis has arrived at the International Space Station.
