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Moon crossing Leo at dawn, Nov. 26-28, 2021

Celestial News & Events

This Week's Sky at a Glance, November 25 – December 4

While the Jupiter-Saturn-Venus line keeps shrinking, all kinds of deep-sky sights, naked-eye to telescopic, show themselves on these moonless evenings.

Earth Flyby

Spacecraft and Space Missions

Solar Orbiter to Fly Past Earth Thanksgiving Weekend

The Solar Orbiter mission will fly past Earth Friday night, setting up a dramatic sunward plunge.

Moon and Aldebaran, Nov. 19, 2021

This Week's Sky At a Glance

This Week's Sky at a Glance, November 19 – 27

Orion now rises in the east around 8 p.m. Will Betelgeuse or Rigel be the first of his bright stars to come up? That depends on your latitude; Los Angeles and Atlanta are balance points. The Pleiades and Aldebaran watch this scene from high above.

May 2021 lunar eclipse

Eclipses

A Near-Miss Total Lunar Eclipse

A near-total lunar eclipse will be widely visible across North America on the night of November 18–19. Dress warmly and go for it!

Spica points the way to low Mercury and Mars in the dawn, mid-November 2021

This Week's Sky At a Glance

This Week's Sky at a Glance, November 12 – 20

Venus, Jupiter and Saturn highlight the dusk. Mercury and Mars are a dawn challenge. And get ready for the barely-almost-total eclipse of the Moon.

International Dark-Sky Association 2021 Virtual Conference

Save Dark Skies

Under One Sky: Let's Address Light Pollution Together

Concerned about light pollution? Join a virtual conference this weekend that looks at ongoing global efforts to mitigate it.

Moon passing Venus at dusk, Nov. 7-8, 2021

Celestial News & Events

This Week's Sky at a Glance, November 5 – 13

In the evening sky the waxing Moon walks up past Venus, then Saturn and Jupiter day by day. And we're in the season of the Summer Triangle Effect.

Moon, Mercury, Spica low in bright dawn, Nov. 3, 2021

Celestial News & Events

This Week's Sky at a Glance, October 29 – November 6

The moonless evenings this week offer three bright planets and deep-sky riches as deep as you can go. Meanwhile, the waning crescent Moon meets Mercury and Spica low in bright dawn.

Earth and Uranus compared

Explore the Night with Bob King

Uranus Queues Up for Opposition

Journey to a remote planet then double back to check in on the latest stirrings of Comet 29P/Schwassmann-Wachmann before touching the finger of dawn.

Moon with Aldebaran and Pleiades, Oct. 22-23, 2021

This Week's Sky At a Glance

This Week's Sky at a Glance, October 22 – 30

As fall proceeds, Jupiter and Saturn shift westward and tilt ever more steeply. Venus gets a little higher and brighter. The waning Moon passes the Pleiades. And as Halloween approaches, Arcturus becomes the Ghost of Summer Suns.

Jupiter impact flash Oct. 15, 2021

Celestial News & Events

Jupiter Whacked Again? Japanese Astronomers Record Possible Impact

A group of Japanese astronomers just discovered a potential new impact at the planet Jupiter.

Moon shines with Jupiter and Saturn, Oct. 15, 2021

Celestial News & Events

This Week's Sky at a Glance, October 15 – 23

The gibbous Moon shines under Jupiter and Saturn, then waxes to full under the Great Square of Pegasus. Cassiopeia stands on end high in the northeast, as Capella glitters far below.

Celestial News & Events

How Bright Will Comet Leonard Get?

We examine circumstances and expectations for the current apparition of Comet Leonard, which may become the year's brightest comet.

Moon, Venus, Antares at dusk, Oct. 9-10, 2021

Celestial News & Events

This Week's Sky at a Glance, October 8 – 16

The crescent Moon returns to the evening sky, passing Venus, then the Saturn and Jupiter pair. Venus itself passes Delta Sco and then Antares. Auroras may shimmer, the Draconids may sputter; the sky never ceases to call.

Conflagration, Expansion and Fade

Celestial News & Events

Comet 29P Undergoes Brightest Outburst in Recent Years

Catch one of the most active small bodies in the solar system during a rare superoutburst.

Jupiter and Saturn in Capricornus, late Sept. 2021

This Week's Sky At a Glance

This Week's Sky at a Glance, Sept. 24 – Oct. 2

Jupiter and Saturn shine in the south-southeast at dusk, Venus low in the southwest. They're all close to the ecliptic, so a straight line from Jupiter through Saturn points almost exactly to Venus. Don't believe it? Stretch a string tightly between your hands wide apart, hold it up to the three planets, and see for yourself!

Moon under Saturn and Jupiter, Sept. 16-18, 2021

Celestial News & Events

This Week's Sky at a Glance, September 17 – 25

The waxing gibbous Moon shines with Jupiter and Saturn on its way to full. And as summer turns to fall, Deneb replaces Vega as the zenith star after dusk.

Pallas and Neptune time exposre

Explore the Night with Bob King

Asteroid Pallas Makes a Point in Pisces

Spice up your fall observing with a dash of Pallas and nibble of Neptune. Both planet and asteroid are easy to spot in a small telescope.

Possible Jovian impact flash

Solar System

Amateurs Spot New Impact Flash at Jupiter

An amateur astronomer has discovered a possible new impact flash in Jupiter's equatorial region. Observers may yet see the dark impact scar.

Celestial News & Events

This Week's Sky at a Glance, September 10 – 18

The evening Moon steps eastward over Scorpius as it waxes through first quarter. All four giant planets await your telescope in early to late evening.

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