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Posts by Deborah Byrd

Self-portrait by Dan Bush
Science Wire | Jul 06, 2015

EarthSky’s top 10 tips for super stargazers

Here are 10 simple tips that can help you connect with the night sky, and have fun.

Image via earthtimes.com
Tonight | Jul 06, 2015

Earth farthest from sun for 2015 on July 6

Earth is farthest from the sun on July 6. Astronomers call this point in our orbit Earth’s “aphelion.”

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Tonight | Jul 05, 2015

Summer Triangle: Altair and Aquila the Eagle

In the east, after dark on July evenings, look for the bright star Altair fairly close to the horizon. Altair is the brightest star in the constellation Aquila.

This galactic fireworks display is taking place in Messier 106, a spiral galaxy like the Milky Way. This galaxy is famous for its two extra spiral arms that glow in X-ray, optical, and radio light. These extra spiral arms aren't aligned with the plane of the galaxy.  Instead, they intersect it.
Today's Image | Jul 04, 2015

Galactic fireworks

Here’s a composite image of Messier 106, known for its strange spiral arms, located 23 million light years away.

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Tonight | Jul 04, 2015

Summer Triangle: Deneb and Cygnus the Swan

Deneb is the northernmost star in the Summer Triangle asterism. Its constellation Cygnus the Swan flies along the starlit trail of the Milky Way.

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Tonight | Jul 03, 2015

Summer Triangle: Vega and its constellation Lyra

The Summer Triangle consists of three bright stars in three different constellations. The brightest is Vega in the constellation Lyra.

protoplanetary-disk-alan-boss-model
Science Wire | Jul 02, 2015

Stars’ spiral arms cradle baby planets

A new theoretical model focuses on the spiral arms now known to exist around some young stars. The spiral arms may enable rocky planets like Earth to form.

M4 via ESO
Tonight | Jul 02, 2015

Find M4, a globular cluster by the Scorpion’s heart

In a dark sky, look for fuzzy object near bright Antares in the constellation Scorpius. This is M4, one of the closest globular star clusters to our solar system.

mercury-aldebaran-pleiades-Ken-Christison-6-30-2015-sq
Today's Image | Jul 02, 2015

Mercury and more before dawn

Ken Christison caught Mercury in the east before dawn this week. He couldn’t see it with the eye that day, but you might see it, if you look. Here’s how.

sinkhole-comet 67P-Churyumov-Gerasimenko-cp
Science Wire | Jul 01, 2015

Are those sinkholes on Rosetta’s comet?

Sinkholes on Earth happen when a subsurface cavern collapses. On the comet, the caverns may be created by ices turning to gas, as the comet nears the sun.