Stephanie Pappas

The upper levels of the ocean have never been this hot. Blame the end of La Niña and the ever-present heating effect of climate change.

New James Webb Space Telescope images reveal the grisly past of Cassiopeia A, the youngest known supernova remnant in the Milky Way.

Are aliens real? While there is no current evidence for extraterrestrial life anywhere in the universe, scientists are still optimistic.

The bounds on Ramsey numbers, which describe relationships between nodes in a network, have been narrowed.

Scientists are taking a closer look at the afterglow left by the brightest gamma-ray burst ever recorded, and what they see doesn't fit with any theoretical models.

New research claims that giant space rocks hit Earth far more often than has been estimated. But some scientists are skeptical.

The release of hydrogen from within 'Oumuamua may explain some of the interstellar object's strange behavior.

Asteroid 2023 DZ2 will zip between Earth and the moon's orbit on March 25 and may be visible with the right telescope.

A new model shows how the planet's surface evolved over the past 100 million years, from the shifting of tectonic plates to the movement of sediments.

A new study finds that COVID-19 had minimal mental health impacts on the population, consistent with other research suggesting that people are resilient.

The March full moon is known as the Worm Moon. It will be at its fullest at 7:40 a.m. EST on March 7, 2023.

The newly discovered comet C/2023 A3 is making a close approach around the sun for the first time in 80,000 years, and might be as bright as a star in fall 2024.

The Mars rover Zhurong hasn't moved since last fall, new orbiter images confirm, suggesting that the Chinese rover may be at the end of its lifespan.

The first analyses of samples brought back from the asteroid Ryugu show that this space rock contains some of the molecules needed for life.

A vineyard sits within an old impact crater in southern France, new research reveals.

NASA's Curiosity Mars rover has photographed clear signs of ripples locked into a Martian rock, a sign of an ancient lake on the Red Planet's surface.

Thwaites Glacier in West Antarctica, known as the Doomsday Glacier for the role its melt could play in global sea level rise, is melting more slowly than previously estimated, new research finds. But the glacier is still in trouble.

The Winchcombe meteorite was collected mere hours after it fell, but researchers have found that it was already contaminated with earthly minerals, including common table salt.

Narcissistic individuals tend to brag about their exploits, but it's not because their self-esteem is inflated, new research suggests.

While the mantle is mostly solid, a layer about 93 miles (150 kilometers) down is melty, new research finds.

Scientists have discovered an extremely rare star system that is doomed to explode in a 'kilonova' caused by the merger of two neutron stars.

Eight signals from far-off stars probably aren't aliens, but the machine learning method that found them holds promise in the search for real extraterrestrials.