Enjoying EarthSky? Subscribe.

271,822 subscribers and counting ...

Scientists listen to ocean bubbles

A research team recorded the sound of methane bubbles seeping from the seafloor off the Oregon coast, with the aim of using acoustics to identify – and perhaps measure – this important greenhouse gas in the ocean.

How fireworks get their colors

The beautiful colors in fireworks – so good at stirring our emotions – are pure chemistry.

Dust from Africa spreads into the Americas

This past weekend, a massive dust cloud from Africa’s Sahara Desert swept across the Atlantic and caused hazy skies across Texas, Mexico and parts of Central America.

Join EV Nautilus in a meteorite search

On Monday, the sea-going research vessel EV Nautilus will search for fragments of a minivan-sized meteorite that fell into the ocean, after lighting up skies over Washington, Oregon and British Columbia. You’re invited!

Mapping the threat of small near-Earth asteroids

65 million years ago, a monster asteroid wiped out 2/3 of all life on Earth, including the dinosaurs. But an astrophysicist explains why it’s the smaller near-Earth objects (NEOs) that pose a greater imminent threat.

James Webb Space Telescope launch pushed to 2021

Space fans waiting for the launch of the Webb Space Telescope – which will be the successor to the Hubble Space Telescope – will have to wait longer.

Asteroid Day 2018 is June 30

The 4th annual Asteroid Day is Saturday. What’s in store? Science, adventure and a 48-hour live webcast! How to participate.

Great white sharks dive deep into warm-water whirlpools

Researchers tracked 2 great white sharks to find out where they spend their time. Watch a cool video of the tricky job of tagging Lydia, a great white swimming in Florida waters.

Fragments found for small asteroid that exploded over Russia last week

The meteor was seen over Russia on June 21. Now scientists from Ural Federal University are reporting finding meteorite fragments from the event. Plus … why are so many large meteors seen over Russia?

Will your summer will be full of mosquitoes?

Now that it’s summer in the Northern Hemisphere, our thoughts turn to … mosquitoes! Here’s some handy info from a biologist.