Scientists believe that conditions on Mars around 3.8 billion years ago were very similar to those of the early earth when primitive organisms were spreading through our oceans. At that time Mars would have been much warmer and wetter than it is today with an atmosphere composed mainly of ...
The most definitive piece of evidence that we currently have that there may indeed be subsurface Martian microorganisms is the observation ofmethanein the atmosphere of Mars. On Earth, methane almost always comes from a biological source, but other processes can create methane -- usually volcanism ...
NASA and Japan's space agency (JAXA) have officially launched the world's first wooden satellite into Earth orbit. The magnolia wood LignoSat is an attempt to make space junk biodegradable, potentially solving the growing problem of orbital debris.
A test to protect Earth from asteroids unleashed a swarm of boulders—and a new study suggests that there may be some unintended consequences.
15.What does the man advise the woman's son to focus on? A.Social activities. B.Personal interests. C.Overall ability. 16.What is required in the important essay? A.An outlook for future careers. B.Plans for scientific experiments. C.Developmen...
Researchers predict that the first ice-free day will take place on a late August or early September day between the 2020s and 2030s under all emissions scenarios. By the middle of this century, scientists say it's likely the Arctic will have an ocean without floating ice for a whole month...
“We found several survival mechanisms. For example, some microbes use water directly from the atmosphere, so they don’t need any rain.” Related: 8 Things that make Life on Earth Possible The team also created different soils and salty brines that mimicked some of the conditions on Mars....
Karen Rosenlof, an atmospheric chemistry scientist at NOAA who has published papers on the effects of aluminum oxides from satellite re-entries on Earth's upper atmosphere, however, said the conclusions should be approached with caution. Scientists, including Rosenlof and Boley, have previously exp...
The United Arab Emirates will arrive at Mars on Feb. 9. It could rewrite our understanding of the planet's atmosphere. Abrar Al-Heeti This story is part ofWelcome to Mars, our series exploring the red planet. July 2020 wasan incredibly busy month for Martian explorers, with NASA and the...
Under an intermediate emissions scenario, a path the current society is on, the Arctic might become ice-free only during late summer and early fall from August to October. But under the highest emissions scenario, the Arctic could be ice-free for up to nine months by late this century. ...