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The collision between a US and Russian satellite in space highlights the growing importance of monitoring objects in orbit.


 satellite space debris space junk orbit
There's a dimmer switch inside the sun that causes its brightness to rise and fall on timescales of around 100,000 years - exactly the same period as between ice ages on Earth. So says a physicist who has created a computer model of our star's core. ... (Most scientists believe that the ice ages are the result of subtle changes in Earth's orbit, known as the Milankovitch cycles. One such cycle describes the way Earth's...


 Earth orbit Sun oscillation ice age Milankovitch cycle planet
The international mission to Saturn - Cassini-Huygens - has successfully entered an orbit around the planet.


 orbit Saturn Cassini-Huygens
In 1.1 billion years, the Sun will grow 11% brighter, raising average terrestrial temperatures to around 50 °C (120 °F). That will warm the oceans so much that they evaporate without boiling...It would be a big job, and would take plenty of patience to move the Earth consistently outwards as the Sun grew warmer...


 Earth Sun temperature orbit Solar System future
Will Earth still be inhabited 50,000 years from now? A French organization thinks so. In fact, it's confident enough to send those future dwellers a gift from space.


 KEO time capsule orbit space
EADS Astrium says the satellite system would collect the Sun's energy and transmit it to Earth via an infrared laser, to provide electricity.


 electricity power solar energy orbit space infrared laser
UK researchers have developed a device to drag space junk out of orbit. They plan to launch a demonstration of their "CubeSail" next year. It is a small satellite cube that deploys a thin, 25-sq-m plastic sheet.


 sail space junk cleaning satellite orbit drag debris space junk
Unfortunately, it did not attain an orbit. ... But it appears to be functioning and we may be able to try again when it passes by Venus six years from now.


 probe Venus Japan failure gravity orbit Sun
The US National Reconnaissance Office has launched what is reputed to be the largest satellite ever sent into space.


 eavesdropping surveillance intelligence military rocket orbit espionage
A US capsule that could soon be hauling cargo and even astronauts to the space station is set to make its first demonstration flight.


 space travel orbit ISS SpaceX
A movie has been made on the space station that tries to show what Yuri Gagarin might have seen on his historic flight around the Earth in 1961.


 Yuri Gagarin USSR astronaut space travel orbit movie history cosmonaut
Japanese astronomers claim to have found free-floating "planets" which do not seem to orbit a star. Writing in Nature, they say they have found 10 Jupiter-sized objects which they could not connect to any solar system. They also believe such objects could be as common as stars are throughout the Milky Way.


 astronomy star planet dark orbit
First orbit, a free film to download & share created to celebrate the first 50 years of human spaceflight.


 space travel Yuri Gagarin movie documentary orbit