This animation shows why leap years are necessary. Without them, December would eventually drift into summer.

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earth in space with swirling clouds green and brown continents overlaid with giant calendar illustration showing February 29
Leap Day is coming up and its purpose is to keep our seasons in check.

Norman Kuring/NASA/GSFC/Suomi NPP; bgblue; Business Insider

A 13-year-old built a 'death ray' using a 2,000-year-old concept from Greek inventor Archimedes

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Brenden Sener stands in a kitchen with his Archimedes Death Ray science fair project on the counter
Brenden Sener won several awards for his science fair project recreating Archimedes' death ray.

The Sener family

Expect AI-made prescription drugs to be ready for clinical trials in a couple of years, predicts Google DeepMind CEO

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Scientist pipetting samples into a multi-well plate during an experiment in the lab with a screen image of cells in the background.
More healthcare researchers and providers could start to adopt AI tech in the coming years.

Andrew Brookes/Getty Images

NASA's James Webb telescope spotted a strange 13 billion-year-old galaxy that shouldn't exist

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A picture shows several early galaxies. One is highlighted with an arrow
An arrow points to JWST-7329, a rare massive galaxy that is thought to be 13 billion years old.

JWST NIRCAM

Luxury space-tourism company shows off its capsule designed to float to the edge of space with a massive balloon

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Space Perspective's Neptune capsule is a suborbital spacecraft that will be hauled by a hydrogen-filled balloon
Space Perspective unveiled a test model of its Neptune pressurized capsule, which is designed to take passengers on a six-hour suborbital trip.

Courtesy of Space Perspective

45 years ago, NASA's Voyager spacecraft flew past Jupiter. See how the iconic video compares to photos of the planet today.

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Side by side of jupiter
Jupiter as seen by Voyager 1 (left) is far less detailed than this enhanced imaged of Jupiter captured by Juno.

NASA / JPL; NASA/JPL-Caltech/SwRI/MSSS/Rita Najm © (CC BY)

The first private company just landed on the moon. Here's how they did it.

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A Houston company made history by successfully landing the first commercial US spacecraft on the moon, more than 50 years after the US made its last crewed landing.

A sculpture by Jeff Koons has become the first 'authorized' artwork on the moon

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jeff koons with rabbit sculpture
Jeff Koons with "Rabbit."

Steve Parsons/PA Images via Getty Images

Watch the video of Intuitive Machines and NASA landing on the moon and hitting a snag, with $118 million on the line

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moon lander tall rectangular box with with wide metal legs one flat solar panel and gold and silver foil on a stage in front of an american flag
The Intuitive Machines Nova-C lander that's set to fly to the moon in February.

Intuitive Machines/NASA

NASA is back on the moon — with the first commercial lunar landing ever

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An artist's illustration of Intuitive Machines' Odysseus moon lander on the moon with Earth in the background.
Intuitive Machines' Odysseus moon lander touched down on the moon's surface.

Intuitive Machines / NASA

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