Human World
Will the official definition of a planet change … again?
Astronomers will vote on a new definition of a planet in August 2024. The update would include exoplanets and set mass limits.
Today's Image
Satellite trails – and a comet – crisscross Arizona sky
EarthSky community member John Ashley captured a comet - and satellite trails - crisscrossing the Arizona night sky on July 9, 2024. Watch his video here.
Astronomy Essentials

Visible planets and night sky guide for July

Visible planets and night sky guide for July 2024. Tomorrow night, July 15, Mars will lie close to the dim planet Uranus in the morning sky.

Comet 13P/Olbers will be closest to Earth on July 20

Comet 13P/Olbers is making its closest approach to Earth on July 20, 2024. Want to see it for yourself? Check out the finder maps here.
Astronomy Essentials

What are star trails, and how do I photograph them?

Star trails are long-exposure photographs of stars taken as Earth turns, resulting in streaks of light across the sky. Here's how to photograph star trails.

Sun news July 14: BAM! X flare

Sun news for July 14, 2024. Sun activity is now high, thanks to several M flares, 2 M5+ flares, and even a small X flare - an X1.5 flare - all from AR3738.
Human World

Falling Starlink satellites following Falcon 9 fail

A SpaceX Falcon 9 launched Thursday night exploded. It was carrying a Starlink satellites that failed to reach their proper orbit and are now expected to make a fiery reentry.

Map shows extreme heat hammering U.S. coasts

Extreme heat has hammered the U.S. already this summer. Take a look at a map of the states and read more about the heat on the East and West Coasts.
Today's Image

The Penguin and the Egg, interacting galaxies from Webb

The Penguin and the Egg are 2 interacting galaxies that will one day merge. Webb released this image for its 2nd anniversary of science observations.

SpaceX Starlink launches for July temporarily grounded

SpaceX Starlink launches are temporarily grounded after an in-flight failure with the 2nd stage of a Falcon 9 rocket. FAA has grounded the Falcon 9 as it investigates.