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In fact, the life that could be – emphasis on the could be – thriving on a distant ocean-covered planet named K2-18b is likely not intelligent at all.

But that doesn't make the recent discovery any less exciting.

Astronomers at the University of Cambridge announced on April 17 that they had found the strongest evidence yet that life may exist anywhere else besides Earth. Using data from NASA's James Webb Space Telescope, the researchers detected atmospheric clues hinting that microbial organisms could be living on the surface of K2-18b in the constellation Leo.

Here's everything to know about the discovery, the intriguing exoplanet itself and the ongoing search for life in the cosmos.

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L ike many scientists, I came to the US as a young adult, driven by idealism and ambition. I arrived with all my belongings contained in two suitcases, and just enough cash to cover the first month’s rent on a small apartment. But I also had something of greater value: an offer to work and train in one of America’s top biomedical research laboratories, a chance to participate in the revolution that is modern biological science.

In the years that followed, I became an American scientist and raised an American family. Now, I lead a laboratory in one of the US’s great universities. I am a member of America’s National Academy of Sciences. From a scientist’s perspective, I have lived the American dream.

My story is not unusual. Many of the best scientists in the world are drawn to the US, joining many Americans who choose to build a career in science. This attraction to American science is because more so than any other country, America values unfettered scientific enquiry. In the US, scientists have greater resources to pursue their work, and scientists are an integral part of a culture that has innovation and dynamism at its core.

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SpaceX launched its huge Starship rocket on the program's eighth test flight Thursday, but a malfunction of some sort triggered multiple upper stage engine shutdowns and the vehicle failed to reach its planned sub-orbital altitude, breaking apart in a spectacular shower of debris.

It was the second failure in a row for a Starship upper stage, a vehicle critical to NASA's plans to return astronauts to the moon in the next few years.

"During Starship's ascent burn, the vehicle experienced a rapid unscheduled disassembly and contact was lost. Our team immediately began coordination with safety officials to implement pre-planned contingency responses," SpaceX said in a statement.

"We will review the data from today's flight test to better understand root cause. As always, success comes from what we learn, and today's flight will offer additional lessons to improve Starship's reliability."

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An ancient cat was found almost perfectly preserved in Siberia's permafrost.

Researchers found the mummy of a 35,000-year-old saber-toothed cub in what is now Russia's northeastern Sakha Republic, also known as Yakutia, in 2020. A study published this past week in the journal Scientific Reports shows that the cat was just three weeks old when it died, but its cause of death is unknown.

The kitten still had its whiskers and claws attached when it was pulled out of the permafrost, and was covered in a coat of "short, thick, soft, dark brown fur." Its hair was about 20 to 30 millimeters long, according to researchers.

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Scientists in Bolivia are hoping to track glacial changes at lightning speed.

What if the song "Baby Shark" stopped after just two stanzas?

For non-fans of the catchy tune, that might sound like a dream. For a real-life Mommy Shark in Illinois, it's reality: She produced a baby without a Daddy Shark.

The epaulette shark pup hatched this summer at Brookfield Zoo, just west of Chicago. Its mother has been at the zoo since 2019; in that time, she's never shared a tank with a male.

It's a rare case of parthenogenesis, a type of asexual reproduction, according to the zoo.