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Posts by Larry Sessions

South to overhead late summer to autumn
Tonight | Aug 28, 2014

Star of the week: 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.

M8  via ESO/S. Guisard/S. Brunier
Tonight | Aug 26, 2014

Messier 8 is the Lagoon Nebula

The Lagoon Nebula aka M8 is the largest and brightest of a number of nebulosities in and around Sagittarius.

Vega via NASA Jet Propulsion Laboratory
Tonight | Jul 24, 2014

Vega is the Harp Star

One of the prettiest stories in all skylore surrounds this star. “On the 7th night of the 7th moon … “

Tonight | Jul 20, 2014

Moon, star cluster, bright star beautiful before dawn July 21

A beautiful view of the waning crescent moon, Pleiades star cluster and bright star Aldebaran In dark eastern skies before dawn on July 21.

Jul 11, 2014

Does a supermoon have a super effect on us?

The moon (and sun) creates the tides. An extra-close full moon creates higher tides. But this same gravitational effect doesn’t extend to humans.

Antares and M4 image by stargazerbob@aol.com
Tonight | Jul 01, 2014

Antares is Heart of the Scorpion

The ruby Heart of Scorpius is the 16th brightest star in our sky and one of the most gigantic stars known.

Blogs | Jun 30, 2014

No leap second to added on June 30

World timekeepers will not add a leap second on June 30, 2014. Meanwhile, a proposal to dump the leap second has been deferred until 2015.

Nike's "Moon Jump."  See video here.
Jun 26, 2014

Five myths about the moon

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

Image Credit: NASA
Blogs | Jun 21, 2014

It’s summer. What’s noon to you?

What do you mean by noon? Do you define it by your clock or wristwatch? Or the gnawing in your stomach? Here’s how astronomers think about noontime.

Rock formation in Ebihens, France
Blogs | Jun 16, 2014

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.