EarthSky

Nishinoshima volcano belches ash and lava

A young volcanic island in the western Pacific Ocean has been going through a vigorous growth spurt since mid-June 2020.

Curiosity Mars rover’s summer road trip has begun

After more than a year in a clay-rich region, Curiosity is making a mile-long journey around some deep sand so that it can explore higher up Mount Sharp.

10 years of the sun in 1 hour

A new timelapse from NASA’s SDO Observatory condenses an entire solar cycle into 1 hour.

Why fireflies light up

A firefly’s familiar glow is caused by a chemical reaction. Explanation here, plus many wonderful firefly photos.

Asteroid Day 2020 poster.

Asteroid Day, June 30, live from Luxembourg

The 6th annual Asteroid Day will be held as a digital event on June 30, 2020. It’ll feature presentations with experts, panel discussions, and question-and-answer periods. Here’s how to participate.

Matchstick-like trees laying on the ground, in black and white.

When the sky exploded: Remembering Tunguska

On June 30, 1908, the largest asteroid impact in recorded history occurred in remote Siberia, Russia. We now celebrate Asteroid Day each year on the anniversary the Tunguska event, as it is now known.

How much oxygen comes from the ocean?

At least half of Earth’s oxygen comes from the ocean.

Rippled, shining clouds above a waterway, in Arctic twilight.

The secrets of night-shining clouds

Noctilucent cloud season has returned to Earth’s high latitudes. These “night-shining” clouds are beautiful … photos here.

A star field, with one star shifting position.

Wowzer! Pluto spacecraft sees parallax for Proxima

New images from the fringes of our solar system. The fast-moving New Horizons spacecraft sees a parallax shift – a different apparent position against the background stars – for Proxima Centauri.

Pacific Ocean with some clouds, with the Earth's terminator visible in half the image.

Happy World Oceans Day 2020

Why a World Oceans Day? Consider that Remdesivir, an antiviral medication now undergoing clinical trials as a possible Covid-19 treatment, contains compounds found in sea sponges. Innovation for a Sustainable Ocean is the theme for World Oceans Day 2020.