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This artist's illustration shows a red dwarf star orbited by a pair of habitable planets. Because red dwarf stars live so long — trillions of years — the probability of cosmic life grows over time. As a result, Earthly life might be considered "premature,” a new study suggests. Credit: Christine Pulliam (CfA)

This artist's illustration shows a red dwarf star orbited by a pair of habitable planets. Because red dwarf stars live so long — trillions of years — the probability of cosmic life grows over time. As a result, Earthly life might be considered "premature,” a new study suggests. Credit: Christine Pulliam (CfA)

Astronaut Walter M. "Wally" Schirra, one of the original seven astronauts for Mercury Project selected by NASA on April 27, 1959. The MA-8 (Mercury-Atlas) mission with Sigma 7 spacecraft was the third marned orbital flight by the United States, and made the six orbits in 9-1/4 hours.

Astronaut Walter M. "Wally" Schirra, one of the original seven astronauts for Mercury Project selected by NASA on April 27, 1959. The MA-8 (Mercury-Atlas) mission with Sigma 7 spacecraft was the third marned orbital flight by the United States, and made the six orbits in 9-1/4 hours.

Haunting Photos: The Spookiest Nebulas in Space | Halloween in Space & Space Photos | Space Images,Astronomy & Space Photography

Haunting Photos: The Spookiest Nebulas in Space | Halloween in Space & Space Photos | Space Images,Astronomy & Space Photography

Opal-Studded Meteorite Hints at Origins of Earth's Water

Opal-Studded Meteorite Hints at Origins of Earth's Water

NASA's Mars rover Curiosity captured this image of a Red Planet sunset on April 15, 2015.

NASA's Mars rover Curiosity captured this image of a Red Planet sunset on April 15, 2015.

At top, the Soyuz that we flew here and will fly home in May. Below, the Progress that undocked and burnt up. @Cmdr_Hadfield

At top, the Soyuz that we flew here and will fly home in May. Below, the Progress that undocked and burnt up. @Cmdr_Hadfield

Smithsonian's Moon Photo Exhibit Shows Off Stunning Views from NASA Probe

Smithsonian's Moon Photo Exhibit Shows Off Stunning Views from NASA Probe

This diagram compares the planets of the inner solar system to Kepler-62, a five-planet system about 1,200 light-years from Earth in the constellation Lyra. The five planets of Kepler-62 orbit a star classified as a K2 dwarf, measuring just two thirds the size of the sun and only one fifth as bright.

This diagram compares the planets of the inner solar system to Kepler-62, a five-planet system about 1,200 light-years from Earth in the constellation Lyra. The five planets of Kepler-62 orbit a star classified as a K2 dwarf, measuring just two thirds the size of the sun and only one fifth as bright.

Stellar explosions are most often associated with supernovae, the spectacular deaths of stars. But new ALMA observations provide insights into explosions at the other end of the stellar life cycle, star birth. Astronomers captured these dramatic images as they explored the firework-like debris from the birth of a group of massive stars, demonstrating that star formation can be a violent and explosive process too.

Stellar explosions are most often associated with supernovae, the spectacular deaths of stars. But new ALMA observations provide insights into explosions at the other end of the stellar life cycle, star birth. Astronomers captured these dramatic images as they explored the firework-like debris from the birth of a group of massive stars, demonstrating that star formation can be a violent and explosive process too.

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