An aging star has far more lithium than it should. Astronomers say the likeliest reason is that TOI-5882 swallowed one of its own planets, though they call it a candidate, not a verdict.
Astronomers used Hubble's ultraviolet vision to directly confirm four white dwarfs lost in the glare of nearby red dwarfs, one of them the ninth closest to the Sun.
A vertebrate that freezes solid each winter and wakes without brain damage or organ failure is forcing scientists to reconsider the limits of what a living thing can endure.
A coordinated VLA and MeerKAT campaign sifted more than twenty million radio detections logged while watching the K2-18 system and found nothing that came from the planet. The silence is real, but it rules out only a narrow slice of what a distant civilization might do.
It's a grim but essential test: whether your windshield can withstand a poultry projectile traveling at 560 miles per hour.
For the first time, humanity tested whether it could nudge a killer asteroid out of Earth's path—and the results suggest our planetary insurance policy might actually work.
The solar system's most violent world was hiding in plain sight, its apocalyptic surface mistaken for instrument failure until scientists realized they were witnessing something unprecedented.
The absence of life on a world with all its ingredients could prove as revolutionary as finding it.
The Southern Delta Aquariids reach their peak around July 30, but a nearly full Moon will wash out all but the brightest meteors. Here is why the dark mornings the week before are the better bet, and why no one is quite sure which comet the shower even comes from.
Earth's bulge at the equator means a volcano in Ecuador sits closer to space than the world's highest peak.
A brilliant mind that saved millions faced prosecution and chemical castration by the nation he'd just helped win the war.
Object 1998 SH2 turned up 153 arcseconds from where a gravity-only orbit said it should be. A NASA-led team predicted a hidden comet from that drift alone, then photographed its faint tail with some of the largest telescopes on Earth. The object now carries both an asteroid number and a comet designation.
Our neighbor is far more geologically restless than we thought, with thousands of hidden fault lines suggesting it's still actively contracting and fracturing beneath its dusty surface.
The Moon's crust is still convulsing beneath the dust where humans last walked, a discovery that rewrites what we thought we knew about our nearest neighbor's inner life.
A radioactive isotope etched onto the spacecraft's cover serves as a cosmic clock, allowing any civilization that intercepts the message to calculate exactly when humanity sent it.
Nature's most ingenious optical illusion hides in plain sight across the Arctic ice, revealing how evolution engineers invisibility through structure rather than pigment.
