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Posts by Larry Sessions

Image Credit: NASA
Tonight | Nov 12, 2015

Small Magellanic Cloud, a nearby dwarf galaxy

The Small Magellanic Cloud resembles a luminous cloud, but it’s really a nearby dwarf galaxy, orbiting our Milky Way.

Star Alpheratz, by Princess Andromeda's left eye
Tonight | Oct 09, 2015

Alpheratz is part of the Great Square

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

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.

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.

Altair via astronomers John Monnier and Ming Zhao
Tonight | Aug 11, 2015

Altair is bright star of the Eagle

Altair needs only 10 hours to spin once on its axis, in contrast to roughly a month for our sun. This mighty star spins on its axis more rapidly than Earth!