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 ...

Arizona residents can get into the Independence Day spirit with a July 1 rocket launch from the Vandenberg Space Force Base. Here's what to know.

Bright mirrors and a million satellites could wash out the night sky, so an ESO study caps safe orbits at 100,000 faint craft.

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

SpaceX exited 2025 with 9,600 Starlink broadband and mobile satellites in low-Earth orbit. That's about 75% of active maneuverable satellites in orbit as of March 31, 2026. As Starlink has expanded, ...

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 ...

The summer solstice marks the official start of summer and the longest day of the year in the Northern Hemisphere. In 2026, the summer solstice will occur on Sunday, June 21, giving Phoenix over 14 ...

CLEVELAND, Ohio — The longest day of the year is almost here. The summer solstice arrives at 4:24 a.m. ET on Sunday, June 21, marking the astronomical start of summer in the Northern Hemisphere, ...

Marking the official start of astronomical summer, the solstice is more than a seasonal marker—it’s the alignment between Earth’s tilt and its path around the sun.