Asteroids' close encounters with Mars
For nearly as long as astronomers have been able to observe asteroids, a question has gone unanswered: Why do the surfaces of most asteroids appear redder than meteorites—the remnants of asteroids that ...
Evidence found for granite on Mars
Researchers now have stronger evidence of granite on Mars and a new theory for how the granite – an igneous rock common on Earth—could have formed there, according to a new study. The findings suggest ...
Chinese flyby of asteroid shows space rock is "rubble"
China's first flyby of an asteroid shows that a gigantic space rock which once triggered a doomsday scare is essentially rubble, scientists reported on Thursday.
'Goldilocks' clue to habitable planets
The bad news: Earth's oceans will evaporate away. The good news: It won't happen for another billion years or so.
Juno gives starship-like view of Earth flyby
(Phys.org) —When NASA's Juno spacecraft flew past Earth on Oct. 9, 2013, it received a boost in speed of more than 8,800 mph (about 7.3 kilometer per second), which set it on course for a July 4, 2016, ...
Moons of Jupiter and Saturn could have been seeded with life
Life on Earth or Mars could have been brought to the moons of Jupiter or Saturn on rocks blasted off those planets, researchers say.
Geoengineering approaches to reduce climate change unlikely to succeed, study says
Reducing the amount of sunlight reaching the planet's surface by geoengineering may not undo climate change after all. Two German researchers used a simple energy balance analysis to explain how the Earth's ...
Space scientist suggests mission to Venus might help explain origin of the Moon
Indian craft leaves Earth's orbit on way to Mars
India's Mars orbiter mission left Earth's sphere of influence early Sunday after performing a maneuver to put it on its way to orbit the red planet.
In HG Wells' 'The War of the Worlds', the invading Martians were beaten by that most unassuming of combatants – the common cold. Could the reverse happen and alien viruses pose a threat to human astronauts ...
Indirect study of Earth's core
The center of the Earth is about 6,371 kilometers or 4, 000 miles away, roughly the distance between Phoenix and the North Pole.
Ancient minerals: Which gave rise to life?
Life originated as a result of natural processes that exploited early Earth's raw materials. Scientific models of life's origins almost always look to minerals for such essential tasks as the synthesis of ...
When tectonics killed everything
A new paper reveals how the worst extinction in Earth's history may have been tied to the formation of Supercontinent Pangea. The catastrophe wasn't triggered by an impact from above—unlike another well-known ...
Could dying planets harbor life?
If life does exist anywhere else in the universe, it may only be fleeting. Now scientists are researching how signs of life might look on dying planets.