Waves crash against a sea wall  beneath the Golden Gate Bridge in San Francisco, California, on  December 16th, 2014. The state of California’s water deficit now stands at some 42 cubic km - the volume of water that would be needed to replenish the state’s depleted rivers and recharge underground aquifers. Photograph: Robert Galbraith/Reuters

California is bone dry - and getting even drier as a three-year drought continues. Its water deficit now stands at some 42 cubic km - the volume of wa(...)

People have been invited to submit possible names for five impact craters on Mercury - the planet in our solar system that lies closest to the sun

Putting your name up in lights is enough for some but how about putting a name up on the surface of the planet Mercury?People have been invited to sub(...)

The Orbital Sciences Corporation Antares rocket, with the Cygnus spacecraft onboard, explodes moments after launch from the Nasa’s Wallops flight facility in Virginia. Photograph: Joel Kowsky/AP Photo/Nasa

Authorities today started investigating what caused an unmanned US supply rocket to explode in a fireball moments after lift-off from a Virginia launc(...)

The United Launch Alliance Delta IV Heavy rocket in preparation for the first flight test of Nasa’s new Orion spacecraft at Cape Canaveral Air Force Station, Florida. Photograph: Mike Brown/Reuters

People are being invited to sign up for a free “boarding pass” for trips into space. The plan is to start small with orbital flights but will later in(...)

New earth-sized planet discovered - this  photo issued by NASA gives an artist’s impression of Kepler-186f Photograph: Danielle Futselaar/PA Wire

Astronomers have discovered the first earth-sized planet orbiting a distant star that could potentially have liquid water on its surface. It or(...)

Map of Matter in the Universe: This full-sky map from the Planck mission shows matter between Earth and the edge of the observable universe. Regions with less mass show up as lighter areas while regions with more mass are darker. The grayed-out areas are where light from our own galaxy was too bright, blocking Planck's ability to map the more distant matter.Credit: ESA/NASA/JPL-Caltech

Dick Ahlstrom The universe was born about 100 million years earlier than previously estimated, according to scientists analysing new imag(...)

DICK AHLSTROM Science Editor Dust drilled from a Martian rock confirms that conditions on the Red Planet once included all the ingredient(...)