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Posts by Larry Sessions

Star Alpheratz, by Princess Andromeda's left eye
Tonight | Oct 08, 2015

Star of the week: Alpheratz in the Great Square

Come to know this star and be one step further along the path of finding the Andromeda galaxy.

Mark Gregory
Tonight | Oct 02, 2015

Shedding light on the moon’s dark side

It’s true there is a far side of the moon – a side that remains hidden from Earth. But the moon doesn’t have a permanent dark side.

Nike's "Moon Jump."  See video here.
Sep 29, 2015

Five myths about the moon

Moon myths, take that! Five of the most common myths about the moon explained.

Sep 25, 2015

Does a supermoon have a super effect on us?

Closest supermoon of 2015 coming up. Its pull of gravity will create higher-than-usual tides. But gravity doesn’t affect a human body as much as an ocean tide.

Tonight | Sep 22, 2015

Fomalhaut had first visible exoplanet

Fomalhaut is sometimes called the Loneliest Star. Its planet Fomalhaut b was the first beyond our solar system to be visible to the human eye.

Tonight | Sep 02, 2015

Use Big Dipper to find North Star

The two outermost stars in the bowl of the Big Dipper are your guide to finding Polaris, the North Star.

South to overhead late summer to autumn
Tonight | Aug 25, 2015

61 Cygni is the Flying Star

61 Cygni isn’t bright. But it moves exceptionally rapidly against the background of more distant stars. Its motion reveals its nearness to Earth.

Rock formation in Ebihens, France
Science Wire | Aug 20, 2015

Seeing things that aren’t there

Seeing animals in clouds, or a face in the moon, are examples of pareidolia. Look here for photos and to test your own ability to see things that aren’t there.

Tonight | Aug 19, 2015

Deneb is distant and very luminous

Deneb is one of the most distant stars you will see with your eye alone. That’s because it’s one of the most luminous stars in the Milky Way galaxy.

Photo Credit:  A. Dupree, R. Gilliland, NASA
Science Wire | Aug 12, 2015

How far is Betelgeuse?

Finding star distances isn’t easy. Here’s how it’s done, and why astronomers recently modified the distance estimate to the famous star Betelgeuse.