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Twilight view, looking low.

Press Releases

Jupiter and Mercury Pair Up in Twilight March 13–16

Two bright planets form an eye-catching pair low in twilight Sunday through Wednesday, March 13 – 16, 2011.

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This Week's Sky At a Glance

Sky at a Glance | March 4th, 2011

Mercury and the waxing crescent Moon climb higher in the western twilight day by day, while Jupiter sinks lower.

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This Week's Sky At a Glance

Sky at a Glance | February 18th, 2011

Orion stands highest after dark, four constellation carnivores are marching in parallel, and the Moon triangulates with Saturn and Spica.

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This Week's Sky At a Glance

Sky at a Glance | February 11th, 2011

Jupiter's South Equatorial Belt is back, just as Jupiter is declining in the west after dusk. Orion stands at his highest in early evening, and the Moon waxes to full.

This Week's Sky At a Glance

Sky at a Glance | February 4th, 2011

The waxing crescent Moon passes Jupiter in the western evening sky this week, then meets up with the Pleiades. Bright Sirius guides the way to much littler star clusters and, if you're in the latitudes of the southern U.S., Canopus.

This Week's Sky At a Glance

Sky at a Glance | January 28th, 2011

With February arriving, not only is Orion high but the Big Dipper is on the way up, Cassiopeia is on the way down, Leo is already making its appearance, and the Northern Cross plants itself upright.

This Week's Sky At a Glance

Sky at a Glance | January 21st, 2011

The Winter Hexagon fills the southeast after dark, while Jupiter sinks down on the other side of the sky. And the Moon meets Venus at dawn.

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This Week's Sky At a Glance

Sky at a Glance | January 14th, 2011

Orion and Sirius are rising higher after dusk, while Jupiter declines on the other side of the sky. And this week the full Moon shines among its perennial January companions.

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This Week's Sky At a Glance

Sky at a Glance | January 7th, 2011

The waxing Moon passes Jupiter in the evening sky. Venus and Mercury have almost simultaneous elongations in the dawn. And don't miss Saturn's enormous, rapidly evolving white spot!

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This Week's Sky At a Glance

Sky at a Glance | December 31st, 2010

Orion is up in the evening with Lepus under his feet, while Jupiter sinks in the southwest. Venus blazes before dawn, when Saturn in a telescope displays its rapidly evolving new white spot.

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This Week's Sky At a Glance

Sky at a Glance | December 24th, 2010

Orion is up after dusk, Sirius follows below it, and the waning Moon passes planets in the early morning — including Saturn with its big new white spot.

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This Week's Sky At a Glance

Sky at a Glance | December 17th, 2010

The Moon is totally eclipsed late on the night of December 20–21 (for North America) for the first time in nearly three years. Watch the bright Moon crossing through Taurus in the evenings leading up.

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This Week's Sky At a Glance

Sky at a Glance | December 10th, 2010

Mercury and Mars pair up deep in bright twilight, the Moon passes Jupiter, and Venus before dawn blazes at its highest, with Saturn looking on.

Finding the Geminid meteors' radiant

Celestial News & Events

It's Geminid Time!

What many skywatchers consider the year's richest and most reliable meteor shower peaks this year on the morning of December 14th.

Uncategorized "New Scrutiny of the Sun's Secrets""}'>

Beyond the Printed Page:
"New Scrutiny of the Sun's Secrets"

Links for article that appeared in Sky & Telescope, February 2011

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Observing

Sky at a Glance | December 3rd, 2010

Jupiter's South Equatorial Belt Outbreak has spread its dark stuff halfway around the planet. Venus blazes high in the dawn, with Saturn looking on. And deep in the sunset, the Moon occults Mars.

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This Week's Sky At a Glance

Sky at a Glance | November 26th, 2010

The waning Moon passes Saturn, Spica, and Venus at dawn. Mira is still naked-eye but fading. And on Jupiter, the South Equatorial Belt Outburst contines to pour out fresh dark material.

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This Week's Sky At a Glance

Sky at a Glance | November 19th, 2010

The Moon turns full on Sunday the 21st. Dramatic telescopic events have begun on Jupiter. Mira is still 3rd magnitude but starting to fade. And Venus, Spica, and Saturn are climbing higher in the dawn.

Exoplanets

Planet from Another Galaxy

Astronomers have found a planet orbiting a very ancient, high-velocity, former red giant star that came from beyond the Milky Way.

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This Week's Sky At a Glance

Sky at a Glance | November 12th, 2010

Dramatic telescopic events have begun on Jupiter. Mira is still 3rd magnitude but starting to fade. And Venus, Spica, and Saturn are climbing higher in the dawn.

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