Gliese 581g is part of a string of planets in the Gliese 581 solar system. Two of Gliese 581g's siblings - Gliese 581e and Gliese 581b - orbit too close to their parent star to support any kind of life on them.
Planets that orbit too close to or too far away from their stars do not have a suitable climate; this can only be found in a slender strip of solar space around each star known to astronomers as a 'habitable zone'.
When a planet, orbiting around a star (other than our sun), passes in front of its parent star, then we can see a spectrum of starlight passing through its atmosphere. This gives us information on the possibility of life.
When a planet, orbiting around a star (other than our sun), passes in front of its parent star, then we can see a spectrum of starlight passing through its atmosphere. This gives us information on the possibility of life.
Astronauts Chris Cassidy and Luca Parmitano joined forces on Expedition 36, a six-month stay on the International Space Station which traveled 2,656 orbits of earth totaling over 70 million miles.
In our ongoing fascination of sending weird things into space, scientists launched an orbital satellite filled with geckos in order to better understand mating in zero-gravity. The satellite has since gone rogue.
In our ongoing fascination of sending weird things into space, scientists launched an orbital satellite filled with geckos in order to better understand mating in zero-gravity. The satellite has since gone rogue.
In our ongoing fascination of sending weird things into space, scientists launched an orbital satellite filled with geckos in order to better understand mating in zero-gravity. The satellite has since gone rogue.
In our ongoing fascination of sending weird things into space, scientists launched an orbital satellite filled with geckos in order to better understand mating in zero-gravity. The satellite has since gone rogue.
Low-Earth Orbiting satellites are designed to withstand a regular onslaught of solar energy, but a rare "solar megastorm" could decimate a majority of the fleet.
Low-Earth Orbiting satellites are designed to withstand a regular onslaught of solar energy, but a rare "solar megastorm" could decimate a majority of the fleet.
With the surprise launch of a rocket that apparently put an object into orbit, North Korea showed that it was clearing key technical hurdles toward mastering intercontinental ballistic missile technology.
Two outer planets of the Kepler 62 system may lie in the habitable zone. Their orbits place them both in the “Goldilocks” zone of lukewarm temperatures suitable for liquid water.
Two outer planets of the Kepler 62 system may lie in the habitable zone. Their orbits place them both in the “Goldilocks” zone of lukewarm temperatures suitable for liquid water.
Two outer planets of the Kepler 62 system may lie in the habitable zone. Their orbits place them both in the “Goldilocks” zone of lukewarm temperatures suitable for liquid water.
The ISS is a habitable artificial satellite in low Earth orbit. It has been continuously occupied for over 12 years and has been visited by astronauts and cosmonauts from 15 different nations.
The ISS is a habitable artificial satellite in low Earth orbit. It has been continuously occupied for over 12 years and has been visited by astronauts and cosmonauts from 15 different nations.
The ISS is a habitable artificial satellite in low Earth orbit. It has been continuously occupied for over 12 years and has been visited by astronauts and cosmonauts from 15 different nations.
The ISS is a habitable artificial satellite in low Earth orbit. It has been continuously occupied for over 12 years and has been visited by astronauts and cosmonauts from 15 different nations.
Londoners have called the ArcelorMittal Orbit, a spiraling goliath of red tangled steel that stands 35 stories above London's Olympic Park: the Eye-full Tower, Helter-Skelter, and a contorted mass of entrails.
Londoners have called the ArcelorMittal Orbit, a spiraling goliath of red tangled steel that stands 35 stories above London's Olympic Park: the Eye-full Tower, Helter-Skelter, and a contorted mass of entrails.
Londoners have called the ArcelorMittal Orbit, a spiraling goliath of red tangled steel that stands 35 stories above London's Olympic Park: the Eye-full Tower, Helter-Skelter, and a contorted mass of entrails.
Londoners have called the ArcelorMittal Orbit, a spiraling goliath of red tangled steel that stands 35 stories above London's Olympic Park, the “Eye-full Tower,” “Helter-Skelter,” and a “contorted mass of entrails."
Ebb and Flow, two NASA space probes, have been orbiting the Moon and measuring its gravity field for the last year. Now that their fuel is depleted, NASA will orchestrate their death, a plunge into the lunar surface.
Ebb and Flow, two NASA space probes, have been orbiting the Moon and measuring its gravity field for the last year. Now that their fuel is depleted, NASA will orchestrate their death, a plunge into the lunar surface.
Ebb and Flow, two NASA space probes, have been orbiting the Moon and measuring its gravity field for the last year. Now that their fuel is depleted, NASA will orchestrate their death, a plunge into the lunar surface.
With the surprise launch of a rocket that apparently put an object into orbit, North Korea showed that it was clearing key technical hurdles toward mastering intercontinental ballistic missile technology.
A global chorus of condemnation followed North Korea's launch of a rocket that apparently put an object into orbit, with the United States, Japan, and South Korea describing the launch as intolerable.
A global chorus of condemnation followed North Korea's launch of a rocket that apparently put an object into orbit, with the United States, Japan, and South Korea describing the launch as intolerable.