Constellations
Constellations
359 articles in this category.
Constellations
The Apollo astronauts left behind retroreflectors on the lunar surface that scientists still bounce lasers off today, and the round-trip time has been measured precisely enough to prove the Moon is drifting away from Earth at 3.8 centimeters per year, about the rate your fingernails grow.
Constellations
Neutron stars are so dense that a sugar-cube-sized piece would weigh as much as Mount Everest — and they spin so fast that some complete a rotation 700 times per second
Constellations
There are more stars in the observable universe than grains of sand on every beach on Earth, and the visible cosmos is the small part — most of it is moving away faster than light can travel
Constellations
The most crucial atoms inside your body — the calcium in your bones, the iodine in your thyroid, the zinc in your blood — weren't just made by a single dying star, and their true cosmic history is far more complex
Constellations
If you compressed the entire history of the universe into a single year, all of recorded history would fit in the final 14 seconds — and a single human lifetime would last only 0.2 seconds
Constellations
When astronauts come home from months in orbit, recovery teams often put them in chairs before they walk, because sudden head movements can still make them feel like the ground is moving under them
Constellations
There is no sound in space, but NASA records the electromagnetic vibrations of planets and converts them to audio, and Saturn sounds genuinely haunting
Constellations
The light hitting your eyes from the sun right now left its surface 8 minutes ago — but the energy behind it may have spent roughly 100,000 years fighting its way out from the core
Constellations
The Hubble Space Telescope was nearly blind for its first three years because its primary mirror was ground too flat by 2.2 micrometers, and NASA's reputation depended on a 1993 repair mission built around corrective optics the size of a refrigerator
Constellations
The James Webb Space Telescope is currently observing galaxies that formed 13 billion years ago, and several of them shouldn't exist according to the model cosmologists were using when Webb launched
Constellations
The warmth of the sun on your skin began its journey up to 100,000 years ago — bouncing through the solar interior for almost all of that time before the final 8-minute sprint to Earth, meaning the energy reaching you now started moving when humans were still living in caves.
Constellations
Astronomers have spent decades modeling what triggers dwarf nova outbursts — a unique binary with a 1.81-hour orbit just upended their theories
Constellations
A cargo Dragon just flew its sixth mission to the ISS — and the quiet milestone reveals how SpaceX has rewritten the economics of station resupply without anyone making a fuss about it
Constellations
The big three carriers just agreed to do something they've never done before — pool spectrum against Starlink — and Gwynne Shotwell's reaction tells you exactly how worried SpaceX actually is
Constellations