From the Great Oxidation Event to how Earth is dimming, we look at a selection of stories about how climate changes have affected the Earth in the distant past, the recent past, and the current time. Plus, we review an app called MeteorActive.
Contrary to recent clickbait headlines, a recently discovered comet that likely originated in the Oort Cloud will not be coming near Earth. The closest point of the icy body’s orbit is between Saturn and Jupiter. Plus, how floods shaped Mars, how microbes helped clover grow, and this week’s What’s Up.
Using data from the Hubble Telescope and the ESO’s Very Large Telescope in Chile, a team of scientists have successfully detected clouds on an exoplanet and even measured their altitude. Plus, fossil evidence of humans’ arrival in North America and a review of the first episode of “Foundation” on Apple TV+.
Hycean worlds have hydrogen-rich atmospheres and are covered in oceans, making them prime candidates for the search for life outside our own solar system. These worlds are also more numerous and easier to find than Earth-like exoplanets. Plus, an update on the search for Planet 9 and how volcanoes may provide a climate safety valve.
After careful analysis of orbital data, gravitational forces, and several other factors, NASA’s OSIRIS-REx team calculated the risk of a collision with near-Earth asteroid Bennu to be 0.057% through 2300. Plus, magnetites in meteorites reveal solar system history, and the constellation Ophiuchus is What’s Up.
NASA’s TESS spacecraft, which is primarily used to search for exoplanets, has now observed a veritable symphony of pulsating red giant stars, each with its own internal vibrations. This work was presented at this week’s TESS Science Conference. Plus, some more climate change news (bad) and superflares may be less harmful to exoplanets than thought (good).