Stefanie Waldek

It all comes down to the difference in temperature between the North Pole and the equator.

Two perplexing structures deep inside Earth might be ancient remnants of our early planet, and they could hold clues about the origin of life.

It's based on the colorful microorganisms that live in the clouds on Earth.

The European Space Agency's HOBI-WAN project will test a food-production method on the International Space Station that could be used for long-duration missions to the moon and Mars.

Scientists working with the Center for Oldest Ice Exploration (COLDEX) have collected the oldest directly dated ice cores ever drilled: 6 million years old.

Using the James Webb Space Telescope, scientists mapped the ultra-hot Jupiter WASP-18b in three dimensions, uncovering a blistering hotspot where water molecules are torn apart.

Chiron is forming a ring system, and scientists seem to have caught the action.

Astronomers have sighted Betelgeuse’s mysterious companion — and it’s turning out to be full of surprises.

Just four minutes of darkness was enough to confuse dozens of species of birds.

Ancient iron-metabolizing microbes may have turned toxic oxygen into an energy source.

The team behind Europe's Euclid space telescope just published the world's most extensive simulation of the universe, which maps an astonishing 3.4 billion galaxies.

A new study suggests that, without plate tectonics and the right balance of carbon dioxide and oxygen, advanced alien civilizations may be exceedingly rare.

Scientists didn't expect to find the remnants of an icy world around this extremely dense white dwarf star.

Natural geologic processes at Mars' Oxia Planum may improve the Rosalind Franklin rover's chances of detecting organic compounds.

Alien objects may be seeding the universe. Here's what that means.

Yes, even Jupiter's moons produce auroras.

Data from NASA's InSight lander suggests there's a chunky mix beneath the surface of Mars.

The interstellar visitor appears to have a lot in common with its solar system brethren.

Scientists have solved how molten "raindrops" in meteorites, called chondrules, were formed — and the discovery reveals key details about Jupiter's origin.

While observing the Halley-type comet 12P/Pons-Brooks with ALMA and NASA's Infrared Telescope Facility, researchers determined that the comet's water is strikingly similar to the water on Earth.

A new study finds that liquids other than water might be able to support life on worlds beyond Earth, potentially expanding the envelope of life throughout the cosmos.

ESA's Mars Express spacecraft has been imaging the dynamic Acheron Fossae region of Mars for more than 20 years.

Scientists have developed an algorithm called Astroclimes, which transforms stargazing instruments into climate sensors that measure greenhouse gases in Earth's atmosphere.

Astronomers using NASA's James Webb Space Telescope have found strong evidence for a new exoplanet — one orbiting Alpha Centauri A, the nearest sun-like star to Earth.

Meet the astonishing phenomenon of megaflash lightning.