Posts by 

Deborah Byrd

Asteroid 3122 Florence: Video and images

This large asteroid swept closest to Earth on September 1. It's big enough that astronomers are still catching it in small telescopes, as a small, slow-moving “star.”

Giant sunspots, solar flares, aurora alert!

Sunwatchers are still tracking those 2 large sunspot groups making their way across the Earth-facing side of the sun. Then yesterday there was an X-flare! Watch for possible auroras.

See an extra-red moon or sun this week?

If you live in the U.S. or Canada, a peculiarly red moon - or very spectacular sunrise or sunset - might be due to smoke from wildfires. Click in for images from Earth and space.

How many house-sized NEOs?

A new study shows house-sized NEOs - Near-Earth Objects - to be 10 times fewer than studies had indicated. Still, there are some 3.5 million NEOs larger than 10 meters across.

Millions of stars

This image sequence from ESA's billion-star surveyor - Gaia - looks toward the center of our Milky Way galaxy and captures some 2.8 million stars.

Alien seekers report 15 more fast radio bursts from FRB 121102

Breakthrough Listen – an initiative to find signs of intelligent life in the universe – used the Green Bank Telescope to observe the bursts from the mysterious distant object known as FRB 121102.

Venus and bright stars, east before sunup

From our friend Tom Wildoner, a single shot of the morning stars in the sunrise direction. He added labels to help you identify some of the brighter objects on your morning commute!

After Harvey, a fire ant raft in Texas

A mass of live fire ants floating on the Texas flood.

Exploring the triggers of cosmic disaster

A new study uses data from ESA's Gaia satellite to give the first systematic estimate of how often passing stars nudge comets from the Oort Cloud and send them plunging toward the inner solar system.

Closest far-moon of 2017 on August 30

Today's moon reaches its most distant point from Earth for the month. Astronomers call this point an "apogee" of the moon. This month's apogee is closer than any other in 2017.

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