Posts by 

Deborah Byrd

World from above

Can you find the photographer in this image from an island off the coast of Norway?

Great Valley found on Mercury

Scientists have discovered a Great Valley on Mercury, hundreds of miles long and sunken by as much as 2 miles (3 km) below the surrounding terrain.

A slushy ocean beneath Pluto’s heart?

A bulging, viscous, liquid ocean may lie beneath Pluto's heart-shaped Tombaugh Regio. If it exists, it solves a longstanding puzzle about this region.

100 scientists say yes to asteroid mission

Scientists have signed an open letter in support of increased knowledge of Near-Earth Objects (NEOs), whose orbits carry them near Earth. You can sign it, too.

Supermoon photos from around the world

EarthSky received many photos of the bright and beautiful supermoon. We loved them all and thank you all! See editors' favorites here.

Quake and aftershocks rock New Zealand

A powerful earthquake has struck New Zealand’s South Island, causing tsunami waves, landsides, many aftershocks and leaving 2 dead.

5 keys to enjoying the closest supermoon

The closest full moon since 1948 is coming up this weekend. When should you watch? What should you watch for? Are supermoons hype? Here's all you need to know.

No need for dark matter?

Erik Verlinde just released the latest installment of his new theory of gravity. He now says he doesn't need dark matter to explain the motions of stars in galaxies.

Quasars’ unexpected giant glowing halos

Astronomers didn't expect so many quasars to have halos. The discovery may help them probe the large-scale structure of the universe, aka the cosmic web.

Watching Orion

Orion the Hunter - one of the most familiar constellations to many because of its prominent Belt of 3 stars - is coming back into view in the evening sky.

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