The sun won't die for 5 billion years, so why do humans have only 1 billion years left on Earth?
In a few billion years, the sun will become a red giant so large that it will engulf our planet. But the Earth will become uninhabitable much sooner than that. After about a billion years the sun will become ...
Rosetta swoops in for a close encounter
ESA's Rosetta probe is preparing to make a close encounter with its comet on 14 February, passing just 6 km from the surface.
Why does the Milky Way rotate?
We live in a galaxy that is called the Milky Way. It's called a barred spiral galaxy, which means that it has a spiral shape with a bar of stars across its middle. The galaxy is rather huge—at least 100,000 ...
Virgin Galactic gets back on track toward space tourism
The only thing interrupting the creosote and mesquite that make up one of New Mexico's most remote stretches of desert is a pristine runway where Virgin Galactic plans one day to launch the world's first ...
Europe space truck undocks from ISS
Europe's last supply vessel to the International Space Station undocked on Saturday at the end of a six-month mission, the European Space Agency (ESA) said.
'Live fast, die young' galaxies lose the gas that keeps them alive
Galaxies can die early because the gas they need to make new stars is suddenly ejected, research published today suggests.
How big is the biggest star we have ever found?
The universe is such a big place that it is easy to get baffled by the measurements that astronomers make. The size of UY Scuti, possibly one of the largest stars we have observed to date, is certainly baffling.
Image: Magnetospheric Multiscale Observatories processed for launch
NASA's Magnetospheric Multiscale (MMS) observatories are processed for launch in a clean room at the Astrotech Space Operations facility in Titusville, Florida. MMS is an unprecedented NASA mission to study ...
Why the new moon on February 18th is special
Did you hear the one about last month's 'supermoon?'
How can we protect Mars from Earth while searching for life?
The search for life on Mars presents us with many challenges – not the least of which is microbial contamination. How do we ensure that microbes from Earth don't hitchhike all the way to the Red Planet ...
Power hiccup to speed end of Europe's space truck
A European supply ship will undock from the International Space Station on Saturday as scheduled but be destroyed 12 days earlier than planned because of a power hitch, the European Space Agency (ESA) said Friday.
Image: Giant filament seen on the sun
A dark, snaking line across the lower half of the sun in this Feb. 10, 2015 image from NASA's Solar Dynamics Observatory (SDO) shows a filament of solar material hovering above the sun's surface. SDO shows ...
The search for alternative chemistries of life heats up
Ideas about directing evolution of life forms on Earth and finding life on other planets are rapidly morphing from science-fiction fantasy into mainstream science, says David Lynn, a chemist at Emory University."
An infrared atlas of interacting galaxies
Most galaxies, including our own Milky Way, have been influenced by an interaction with another galaxy at some time in their past. Interactions between galaxies can trigger an increase in star-formation activity ...