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"The Ocean Galaxy" --Many of Milky Way's 4,000 Known Exoplanets May Be Water Worlds


 
“Plumes of water erupt from Europa and Enceladus, so we can tell that these bodies have subsurface oceans beneath their ice shells, and they have energy that drives the plumes, which are two requirements for life as we know it,” says Lynnae Quick, a NASA planetary scientist who specializes in volcanism and ocean worlds. Many of the more than 4,000 known exoplanets might resemble some of the watery moons around Jupiter and Saturn. “So if we’re thinking about these places as being possibly habitable, maybe bigger versions of them in other planetary systems are habitable too.”
“Search for Exoplanets is the Search for Life” ....

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The Allure of Proxima Centauri, the Closest Star to Ours


The Atlantic
They have noticed something intriguing coming from the direction of Proxima Centauri.
Ian Waldie / Alamy
Last month, as 2020 drew to a close and we on Earth completed one of our strangest orbits around the sun, news broke that astronomers had picked up a mysterious signal from another star.
Astronomers could tell, from the specific properties of the beam of radio waves, that it wasn’t made by an act of nature, such as a cosmic explosion. The signal coming from the star’s direction was produced by technology.
The signal, known as BLC1, was intriguing, but when news of its detection leaked to ....

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