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Olympus Mons on Mars is a volcano more than two and a half times the height of Everest, but its slopes rise so gradually over hundreds of kilometres that a person standing on it might not realize they were on the tallest volcano in the solar system at all.
2+ hour, 44+ min ago (63+ words) ...
Voyager 1 is now so far from Earth that a signal traveling at the speed of light takes more than 22 hours to reach it " so when engineers send a command, they can wait nearly two days to know whether the spacecraft responded
12+ hour, 10+ min ago (166+ words) Sending a command to Voyager 1 is closer to mailing a letter than placing a phone call. Published May 24, 2026 Suzy Dodd, the Voyager project manager at NASA's Jet Propulsion Laboratory, put the cadence concretely: "If I send a command and say,…...
The Voyager Golden Record carries greetings in 55 languages " a deliberate attempt to send a small sample of human voices into deep space long after the spacecraft fell silent.
17+ hour, 11+ min ago (299+ words) ...
The Vela satellites were built to catch secret nuclear tests, but they accidentally recorded flashes from deep space that opened a new branch of astrophysics
1+ day, 1+ hour ago (1001+ words) Published May 24, 2026 The Vela satellites were not built to study stars. They were built to watch for nuclear weapons. Then the satellites saw something that was not a bomb. On July 2, 1967, Vela 4 recorded a short flash of gamma radiation. The…...
Atomic oxygen in low Earth orbit slowly eats spacecraft surfaces, and the ISS survives because engineers learned to coat, test, and replace the materials most vulnerable to it
1+ day, 1+ hour ago (1470+ words) Published May 24, 2026 Roughly 400 kilometres above Earth, the International Space Station is flying through a kind of invisible chemical weather. The station is not moving through empty space. It is moving through the thin upper atmosphere, where sunlight breaks oxygen molecules…...
Webb just clocked nearly 9, 000 young star clusters and found the biggest ones break from their birth clouds in 5 million years, a timing clue that could reshape how astronomers model galaxies growing up
1+ day, 1+ hour ago (980+ words) Published May 24, 2026 The James Webb Space Telescope has given astronomers a sharper look at how young star clusters escape their birthplaces, and the result cuts against the simple intuition that smaller clusters should clear out faster. In a Nature Astronomy…...
The Hubble Deep Field began as a gamble on a tiny patch of sky that had been chosen because it looked almost empty, and it ended by revealing nearly 3, 000 galaxies hiding in what seemed like nothing.
1+ day, 2+ hour ago (60+ words) ...
Titan's atmosphere is thicker than Earth's, its rivers and lakes are made of methane and ethane, and NASA is sending a nuclear-powered drone there because on Saturn's largest moon, flying may be easier than driving.
1+ day, 3+ hour ago (0+ words) ...
JPL's management contract is suddenly up for grabs for the first time since the 1930s, and NASA's own language shows why this is more than a routine procurement fight
1+ day, 18+ hour ago (261+ words) ...
A slice of the static on an old untuned television was the afterglow of the Big Bang, which means millions of people spent decades staring at the oldest light in the universe without knowing it.
1+ day, 22+ hour ago (186+ words) The claim is true, though the version of it that gets repeated most often is softer than it sounds. Published May 23, 2026 In May 1965 they published the result in the Astrophysical Journal, under the deliberately plain title "A Measurement of Excess…...