In our continuing search for other life in the universe, one place has always looked promising—Mars. It is a rocky planet like Earth, orbiting the same star, and at a distance where water could have been present on the ...
Space Exploration
Jul 3, 2020
2
182
Undulating streaks of land visible from space reveal rivers once coursed across the Martian surface—but for how long did the water flow? Enough time to record evidence of ancient life, according to a new Stanford study.
Space Exploration
Apr 23, 2020
10
846
An enduring question in geology is when Earth's tectonic plates began pushing and pulling in a process that helped the planet evolve and shaped its continents into the ones that exist today. Some researchers theorize it happened ...
Earth Sciences
Apr 22, 2020
4
3963
Ancient rocks from Greenland have shown that the elements necessary for the evolution of life did not come to Earth until very late in the planet's formation—much later than previously thought.
Earth Sciences
Mar 12, 2020
31
1011
Sitting by a model of the Earth shaped like a pancake, Brazilian restaurant-owner Ricardo lets out an exaggerated laugh: "'Hahaha!' That's how people react when you tell them the Earth is flat," he says.
Other
Feb 28, 2020
38
464
Tiny meteorites no larger than grains of sand hold new clues about the atmosphere on ancient Earth, according to scientists.
Earth Sciences
Jan 30, 2020
2
794
https://www.nasa.gov/press-release/goddard/2019/sugars-in-meteorites
Space Exploration
Nov 19, 2019
18
42845
Despite bearing witness to its own increase in Earth's atmosphere by around 2.5 to 2.3 billion years ago, oxygen has had relatively little to say about its own early history until now. A recent EU-funded study provides a ...
Earth Sciences
Nov 1, 2019
0
21
Western researchers, leading an international team, have shown that the first 'real chance' of Mars developing life started early, 4.48 billion years ago, when giant, life-inhibiting meteorites stopped striking the Red Planet. ...
Space Exploration
Jun 25, 2019
0
0
Around 635 to 720 million years ago, during Earth's most severe glacial period, the Earth was twice almost completely covered by ice, according to current hypotheses. The question of how life survived these "Snowball Earth' ...
Earth Sciences
Feb 1, 2019
0
187
