Calculations of orbits of trans-Neptune objects suggest presence of dwarf planets in Kuiper Belt.
Nasa's New Horizons will begin studying Pluto before closest approach in July.
Asteroid 2004 BL86 will pass Earth by a range of 745,000 miles on 26 January.
Hatch opened to US segment while wearing protective masks but no traces of ammonia found.
MIT scientists say meteors played less of a role in planetary formation than once believed.
Nasa confirms all crew are safe after suspected toxic leak on ISS.
JAXA is studying roundworms on the International Space Station to help cure bone and muscle diseases.
BREAKING: Astronauts on board International Space Station 'safe' after being evacuated.
SpaceX CEO Elon Musk plans a human colony on Mars assisted through commercial satellite production.
UK Space Agency announces mystery conference about Beagle 2 Mars probe.
SpaceX mission deemed a success despite failure of launcher to land on floating touchpad
Chance sighting of ice ring in a flat shelf of continent leads to speculation over its cause.
A map using digital data shows mysterious molecules are present in many environments of the galaxy.
'Close, but no cigar': SpaceX director Elon Musk on failed attempt to land launcher on a floating platform.
Nasa's NuStar telescope spots two colliding galaxies 134 light years away.
Romania Space Agency confirms meteoroid lit up night sky.
Live streaming of the SpaceX Falcon 9 launch attempt on Saturday will be available online.
Discovery of gas clouds further along the Scutum Centaurus suggests spiral goes all around the galaxy.
The wobbling of a pulsar in a binary system due to the curvature of space was used to determine its mass.
Launch of Falcon 9 rocket carrying cargo capsule to ISS put off due to snag.
Nasa discovers new details about destructive stellar system 10,000 light years away.
Structures similar to those seen on Earth and carved by microbes noticed on Gillespie lakebed.
Image released showing gaping hole in star field 700 light years away.
Two best habitable planet candidates found by Harvard-Smithsonian Center for Astrophysics.
Study finds 14 dwarf stars heading for our solar system.
Countdown aborts moments before launch of SpaceX Falcon 9 reusable rocket carrying ISS supplies
The Langley Research Center is exploring inflatable heat shields to safely land spacecraft on Mars.
New images of one of the most iconic images from space re-released by Nasa.
The technology demonstration programme could eventually lead to reduced costs of space launch missions.
The flare detected by Nasa's Chandra X-ray Observatory in September was 400 times brighter than the usual output.