Posts by 

Deborah Byrd

See it! 2017’s Harvest Moon

Photos and videos from the EarthSky community of 2017's Harvest Moon. Thanks to all who submitted photos, or posted them to EarthSky Facebook!

Harvest moon mirage

When you look over an ocean at a distorted sun or moon, the reason is most often that the low slanting rays of the object are being highly refracted between air layers of different temperatures.

Is dust what’s dimming Tabby’s Star?

Astronomers say they've found a smoking gun that rules out the idea of an energy-harvesting megastructure or Dyson sphere - built by an alien civilization - surrounding Tabby's Star.

On October 5, the Harvest Moon

The Northern Hemisphere's Harvest Moon is the full moon closest to the September equinox. It's tonight! Watch for it.

Large storm on sun sparked global aurora on Mars

Scientists said the solar event "lit up Mars like a light bulb." It was the biggest event of its kind so far observed by spacecraft in Mars orbit and on the surface.

Moon and planet-rise, seen from space

This timelapse video shows a peaceful and breathless moonrise from the International Space Station, with Venus, Mars and Mercury also in view.

Can you find the Big Dipper?

From 41 degrees N. - and farther north - the Big Dipper is circumpolar, meaning it never sets. But from more southerly latitudes, the Dipper is below your horizon each evening now. Want to see it? Here's how.

Farthest active inbound comet yet

Most comets become active only when near the sun. This one is active, but distant, between the orbits of Saturn and Uranus, where sunlight is 1/225th as bright as seen from Earth.

Waterglyph

Marc Toso tried 3 times to capture this ancient petroglyph known as a waterglyph, estimated to be between 2,000 and 1,000 years old. The 3rd time was the charm.

Scientists reveal secrets of lost continent Zealandia

Scientists have just returned from a major expedition to Zealandia, a "hidden" Earth continent, likely submerged beneath the sea surface more than 80 million years ago.