Overview Earth's orbit is becoming increasingly crowded as thousands of new satellites are launched every year for internet, ...

Earth’s aphelion on July 6 puts it farthest from the sun in 2026, but summer heat comes from Earth’s tilt, long days and ...

Good morning – and also, a quick goodbye. After more than two years and 300 newsletters, this is my final Morning Update. I’m ...

In the next few years, a private company plans to begin assembling a commercial space station in the Earth’s orbit, the ...

Researchers have long known that there is an asymmetry in the El Niño-Southern Oscillation (ENSO), the confluence of wind and ...

North America’s celestial highlights for the week ahead, which also apply to mid-northern latitudes in the northern hemisphere. This week: bright planets at dusk and dawn ...

Most years, skywatchers have to wait patiently for different celestial events to arrive one at a time. An eclipse might ...

A Jupiter-size exoplanet orbiting a dead star baffled astronomers. But the planet named WD 1856 b could preview the fate of ...

KENNEDY SPACE CENTER — After spending 10 days going to the moon and back, NASA’s Artemis II mission has come to an end after the four crew members finished their lunar flyby in a splashdown in San ...

A best-yet measurement of one of general relativity’s most mind-boggling effects is “another feather in Einstein’s cap” ...

Following its longest hibernation period ever of nearly a year, NASA's New Horizons spacecraft has emerged in good health and ...

NASA's New Horizons probe has woken up in good health nearly 6 billion miles away beyond Pluto after spending nearly a year ...