The ‘Lost Sisters’ of the Pleiades Fill the Entire Night Sky

Astronomers identified more than 3,000 stars associated with the cluster, and there might be even more.

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Webb Telescope Studies Hopeful Hint of Earthlike Atmosphere on Trappist-1e Planet

Scientists are steadily ruling out habitable conditions on the seven planets of the star Trappist-1. On one of the worlds, a nitrogen gas-rich veil remains a possibility.

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Quakes on Mars Reveal New Features of the Planet’s Interior

Using data from NASA’s retired InSight lander, two separate teams of researchers found evidence of a sluggish Martian mantle and a solid inner core.

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Study Finds Planet Around Trappist-1 Star Shows No Signs of Life

Astronomers had hoped to observe an atmosphere on one of the seven planets known to orbit Trappist-1, a red dwarf star. A new study found nothing to write home about.

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Possible Planet Spotted Around Alpha Centauri A by NASA’s James Webb Telescope

Astronomers found strong evidence that a gassy Jupiter-size world is orbiting Alpha Centauri A, one of three stars in the solar system closest to our own.

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Hints of Life on Exoplanet K2-18b Recede Even Further

New observations fail to confirm signs of life in the atmosphere of the distant planet K2-18b. They also raise questions about what it will take to detect biology light-years away.

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Stars Passing Near the Sun Could Cause Planets to Collide or Be Ejected, Paper Says

Stars passing close to the sun could cause planets to collide, including with Earth, or even be ejected as rogue planets, new simulations show.

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Vera Rubin Telescope Quickly Found 1,200 New Asteroids

The Vera C. Rubin Observatory is expected to find millions of unknown objects in our solar system, and perhaps even a mysterious Planet Nine.

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If Elon Musk and Donald Trump Make Up, Don’t Be Surprised

For all the insults that Mr. Musk and Mr. Trump traded on Thursday, don’t be surprised if they make up again days from now. In the meantime, they both benefit.

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Scientists Say They’ve Found a Dwarf Planet Very Far From the Sun

The small world was found during a search for the hypothetical Planet Nine, and astronomers say the next time it will reach its closest point to the sun is in the year 26186.

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