Two Yale University researchers have found a potential shortcut in sampling Venus’ ancient surface. Instead of sending a probe on a costly and extraordinarily challenging Venus sample return mission, they propose simply finding a Venusian meteorite on our own Moon.
There’s never been a bona fide detection of a Venusian meteorite on Earth. For one reason, that’s because in the last several hundred million years at least, Venus’ atmospheric pressures have been so intense that even a catastrophic impactor could not dislodge any Venusian rocks into space.
But before Venus underwent a runaway greenhouse and morphed into the climatic hellhole it is today, it may have had liquid water oceans as late as 700
Scientists have detected a series of saltwater lakes beneath the glaciers of Mars’ southern ice cap. The researchers think the liquid in these lakes doesn’t freeze and become solid, despite the low temperatures of Mars’ glaciers, due to its extremely high concentrations of salt.
The Mars Express spacecraft, which has been surveying the red planet since 2005, had previously detected signs of a subglacial lake basin on Mars’ south pole, but it was unclear whether the lake was liquid or what it contained.
To find out, a group of Italian, German, and Australian researchers applied a radio-echo technique that Earth satellites use to detect subsurface lakes in Antarctica. They scanned the area multiple times from 2010 to 2019, then published their results in the journal Nature Astronomy on Monday.
The analysis confirmed the liquid-water nature of Mars’ underground lake, as