Posts by 

Deborah Byrd

Moving shadows around a planet-forming star

This star has a spiral disk of dust around it. Processes in the inner disk - winds, or swirls or clashes of pebbles - seem to be casting shadows on the outer disk.

Don’t miss Jupiter and Venus at dawn!

Spectacular Venus-Jupiter conjunction on Monday! These are the 2 brightest planets, and they'll be less than a moon-width apart. If you do miss them on Monday, keep watching. The moon is about to sweep past them.

Cloud shadow mystery … solved?

We published a photo last Tuesday, showing a mountain's shadow. We wondered what caused it. Now - with the help of the EarthSky community - the mystery may be solved.

Bright meteor!

The North Taurid meteor shower is peaking around now. It tends to produce a lot of fireballs, or very bright meteors. Keep watching! The shower is sparse, but it goes all month.

Study probes Saturn’s moon Enceladus. Plus, a new mission?

A new study shed light on what powers Enceladus' extraordinary geologic activity, while - at a conference in Seattle last week - space visionaries discussed a return to Saturn's geyser moon.

What makes zombie ants obey

Zombie ant fungus doesn't attack ants' brains. Instead, the fungus invades an ant's entire body, forming an interconnected 3-D network, forcing the ant to move.

Birds and sun, New Delhi, India

C.B. Devgun wrote that it was a foggy morning in New Delhi - November 8, 2017 - when he captured this photo.

The zombie star that wouldn’t die

Supernovae like this one - designated iPTF14hls - usually remain bright for about 100 days. This one stayed bright for 600 days. Then, astronomers found a 1954 explosion in the same spot in the sky.

Use Pegasus to find Andromeda galaxy

The wonderful Andromeda galaxy! Most distant object we can see with the eye alone. Try using the Great Square of Pegasus to find it in a dark sky.

Nickname New Horizons’ next target

The craft that flew by Pluto in 2015 is heading for the Kuiper Belt object 2014 MU69. NASA and the New Horizons spacecraft team want you to help nickname it.

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