Earth-sized planet or LHS 475 b is relatively close, at only 41 light-years away, in the constellation Octans, NASA researchers say, but couldn't confirm if it has an atmosphere.
Webb captures first clear evidence of carbon dioxide in the atmosphere of WASP-39 B, a gas giant closely orbiting a Sun-like star 700 light years away, NASA says.
In a celestial phenomenon not seen in 397 years, Jupiter and Saturn, from the perspective of observers on Earth, align closely in an intimacy that will not occur again until 2080.
Hayabusa2 spacecraft released a small capsule that has landed in a remote, sparsely populated area of Woomera, Australia, Japan's space agency says.
Sky watchers in Turkey's Kutahya province have observed the Perseid meteor shower which occurs every year in August.
The scientists received a series of anxiously awaited signals from the New Horizons, indicating that the aircraft made a historic flyby of the farthest, and quite possibly the oldest, cosmic body ever explored by humankind.
Researchers believe the ice formed relatively recently because the sites appear smooth on the surface and there are no signs of craters that would be formed by celestial debris smashing into the planet over time.
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