Astronomers watch replay of celestial eruption

In the mid-nineteenth century, one of the most massive stars in our Milky Way galaxy suddenly got much brighter. For ten years, indeed, it was the second-brightest star in the sky.

Swiss announce mission to clean up orbital junk

The Swiss have a reputation for cleanliness and order, and now they're planning to tidy up space.

This black hole came from a shredded galaxy

NASA astronomers using the Hubble Space Telescope have found a cluster of young, blue stars encircling the first intermediate-mass black hole ever discovered.

Why is Venus slowing down?

Venus's rotation is slowing down - and scientists aren't at all certain as to why.

The strange haze of the Milky Way galaxy

New images from the European Space Agency’s Planck mission have revealed previously undiscovered islands of star formation, along with a mysterious haze of microwave emissions in our Milky Way galaxy.

Budget woes hit Mars exploration plans

US President Barack Obama’s proposed 2013 budget would effectively slash $226 million from NASA’s Mars exploration program.

Europe's Vega rocket lifts off for first flight

Europe's new Vega rocket has successfully lifted off from the Kourou spaceport in French Guiana, taking nine satellites into orbit.

Milky Way's black hole seen vaporizing asteroids

The supermassive black hole known as Sagittarius A has been observed emitting X-ray flares, lasting a few hours, about once a day.

Carina Nebula gets snapped

Deep in the heart of the southern Milky Way lies a stellar nursery known as the Carina Nebula - located 7500 light-years from Earth in the constellation of Carina (The Keel).

More evidence found for ancient Martian ocean

ESA says its Mars Express probe has returned some of the strongest evidence yet that an ocean once covered part of Mars.

Thousands apply for astronaut program

NASA's received over 6,300 applications to join its astronaut corps - twice as many as usual.

Life on Mars? Not on the surface

Mars may have been an arid planet for over 600 million years, making it too hostile for any life to survive on the planet's surface.

Iran launches third satellite

Iran says it's launched an observation satellite, claiming it will be used to collect weather data.

Habitable planet has three suns

Astronomers have discovered a potentially habitable planet right on our doorstep - just 22 light years away.

NASA takes us to the far side of the moon

A camera aboard one of NASA's twin Gravity Recovery And Interior Laboratory (GRAIL) lunar spacecraft has sent back footage of the far side of the moon.

New SpaceX rocket engine fired up

Space Exploration Technologies (SpaceX) has successfully test fired its new engine, SuperDraco.

Cosmic rays blamed for spaceship crash

After initial suggestions that death-ray-wielding Americans were to blame, Russian space agency Roscosmos has concluded that its lost Martian probe, Phobos-Grunt, was cripped by space radiation.

NASA identifies interstellar matter entering solar system

NASA has for the first time analyzed the 'alien matter' in the interstellar wind.

THEMIS satellite tracks mass electron escape

When scientists discovered two great swaths of radiation encircling Earth in the 1950s, it spawned exaggerated fears about "killer electrons" and space radiation effects.

And today's space weather forecast is... more accurate

Space weather forecasts are about to get more accurate - just in time for a period of increased solar activity.