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.
Roman marine concrete, mixed with volcanic ash and seawater, grows crystals of aluminous tobermorite in its pores for centuries — a self-strengthening chemistry that modern Portland cement cannot match.
New data suggests Mars's fate was sealed not by three separate catastrophes, but by one original sin: a planetary body too small to sustain the heat needed to keep its core alive.
Nature's ultimate time machine: bears survive months of near-suspended animation without the muscle wasting that would destroy a human—knowledge NASA hopes to weaponize for deep space.
For one transcendent night, Spain will witness celestial fireworks twice—first as day surrenders to shadow, then as darkness erupts with ancient fire.
When seed banks elsewhere collapse from war, neglect, or climate chaos, humanity's food future depends on retrieving frozen duplicates from an Arctic mountain—a backup system that has already been tested by catastrophe.
A beluga can dive 700 metres beneath Arctic ice on a single breath, its lungs folding down under pressure and its muscle running on stored oxygen. The physiology that lets one of the ocean's most vocal animals live in near-total darkness — and the world it was built for, which is now vanishing.
The Moon's abrasive soil became astronauts' unexpected adversary: coating equipment, causing airway irritation, and revealing a sensory puzzle that still intrigues scientists today.
The universe's most extreme object reveals a paradox: what takes seconds to fall in appears to take forever from afar.
