Our mostly dry planetary neighbors once had lots of water—what does that imply for us?
We already knew about Venus. We had our suspicions about Mars. Now we're sure.
Space Exploration
Jun 29, 2015
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Page 38 - News tagged with planet earth
Planetrise: Astronomers spy two planets in tight quarters as they orbit a distant star
A research team led by astronomers at the University of Washington and Harvard University has discovered a bigger version of Earth locked in an orbital tug-of-war with a much larger, Neptune-sized planet as they orbit very ...
Astronomy
Jun 21, 2012
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Mystery of rare volcanoes on Venus
The long-standing mystery of why there are so few volcanoes on Venus has been solved by a team of researchers led by the University of St Andrews.
Space Exploration
May 30, 2017
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Lightning strikes played a vital role in life's origins on Earth: study
Lightning strikes were just as important as meteorites in creating the perfect conditions for life to emerge on Earth, geologists say.
Earth Sciences
Mar 16, 2021
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Searching for alien earths with planet colors
Earth is invitingly blue. Mars is angry red. Venus is brilliant white. Astronomers have learned that a planet's "true colors" can reveal important details. For example, Mars is red because its soil contains rusty red stuff ...
Space Exploration
Nov 3, 2010
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Research group suggests modern extinction rate may be higher than thought
(Phys.org)—A team of researchers from a wide variety of institutions in France has concluded that it appears likely that approximately seven percent of all modern invertebrates have gone extinct. In their paper published ...
Exoplanet atmospheres detected from Earth for the first time
(PhysOrg.com) -- Transiting exoplanets are routinely detected when they pass in front of their parent star as viewed from the Earth, which only happens by chance. The transit event causes a small drop in the observed starlight, ...
Astronomy
Jan 14, 2009
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NASA's Mars copter flight could happen as soon as Monday
NASA's Ingenuity Mars Helicopter could make its first flight over the Red Planet as soon as Monday, the US space agency reported, following a delay of more than a week due to a possible technical issue.
Space Exploration
Apr 18, 2021
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Entropy could be key to a planet's habitability
We all know that to have life on a world, you need three critical items: water, warmth, and food. Now add to that a factor called "entropy." It plays a role in determining if a given planet can sustain and grow complex life.
Astrobiology
Dec 14, 2023
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What's the best mix of oceans to land for a habitable planet?
Earth is about 29% land and 71% oceans. How significant is that mix for habitability? What does it tell us about exoplanet habitability?
Astrobiology
Nov 25, 2022
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