21–40 of 2,064 results
Earthshine painting

Celestial Objects to Observe

Solving an Earthshine Mystery

Something we take for granted about the crescent Moon's appearance may be nothing more than an optical illusion.

Crescent Moon and Venus low in the dawn, July 26-27, 2022

Celestial News & Events

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

Bright Arcturus is still pretty high after dark, but as summer progresses, it moves down the western side of the evening sky. Its pale ginger-ale tint always helps identify it.

Moon passing Jupiter and Mars at dawn, July 18-21, 2022u

Celestial News & Events

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

The waning Moon says hi to late-night Saturn, the Teapot starts tilting, the Great Square thrusts up, and the Milky Way arches high.

Iapetus transit single

Planets

See a Rare Transit of Iapetus on July 17–18

It's tiny. It's challenging. But you won't get the chance to see Iapetus transit the globe of Saturn again until 2037!

Waxing gibbous Moon crossing Scorpius and Sagittarius, July 10-12, 2022

Celestial News & Events

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

July is Scorpius season. Maybe you know of the Cat's Eyes in the Scorpion's tail, but how about the Little Cat's Eyes in the Scorpion's body? The Sagittarius Teapot follows not far behind.

Titan and Tethys

Explore the Night with Bob King

Titan Occults a Bright Star, Mira Awakens, and Comet PanSTARRS Shines

Pick one or see them all. July offers a potpourri of celestial events for both naked-eye observers and telescope users that include a rare occultation by Saturn's moon Titan, a bright comet, and Mira at maximum.

Moon passing Regulus and Leo, July 2-4, 2022

Celestial News & Events

This Week's Sky at a Glance, July 1 – 9

The Moon waxes across the evening sky from Leo to Scorpius. The five-planet lineup in the dawn is now four. And amateur astronomers plan to be recording as Saturn's hazy moon Titan occult a star about as bright as Titan itself for most of North America.

Sagittarius-Scorpius on July evenings

Sky Tour Astronomy Podcast

July: Stars of the Summer Sky

July offers lots of pretty stars and constellations to check out, and you’ll get a personally guided tour of them by downloading this month’s Sky Tour astronomy podcast.

The Sun with trees in the foreground

Meet the Stars

Meet The Sun, Our Home Star

In this installment of Meet the Stars, we get to know the nearest one: our Sun. Its properties — like its stability — likely led to life on Earth.

Crescent Moon passing Venus and Mercury, June 26-27, 2022

This Week's Sky At a Glance

This Week's Sky at a Glance, June 24 – July 2

The crescent Moon returns to the evening, crossing Leo. The five-planet lineup continues at dawn; catch it while you still can. And for skywatchers at northern latitudes, we're entering noctilucent cloud season.

Dawn planet line

Explore the Night with Bob King

Solar System Gets its Ducks in a Row

We'll have not one but many opportunities to enjoy a rare lineup of the bright planets over the next few weeks. Amazingly, they'll be aligned in order of their distance from the Sun.

Moon passing Jupiter and Mars in the dawn, June 21-23, 2022

This Week's Sky At a Glance

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

The five naked-eye planets form a diagonal line in the dawn this week — in order of their distance from the Sun, no less. And the waning Moon visits each one in turn, day by day.

Moon crossing Scorpius, June 12-13, 2022

Celestial News & Events

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

The waxing gibbous Moon shines with Spica, then occults Delta Scorpii. Meanwhile, all seven planets other than Earth are forming into a diagonal line across the east to southeast at dawn.

Tau Herculid fireball

Explore the Night with Bob King

Tau Herculid Meteors Surprise and Delight

We touch on the highlights of the memorable Tau Herculid meteor shower and also report on the recent outburst of the recurrent nova U Scorpii.

Waxing Moon with Castor and Pollux

Celestial News & Events

This Week's Sky at a Glance, June 3 – 11

For three nights running, the waxing Moon will pose equidistant from the two brightest stars of Leo. The Cassiopeia W lies exactly level in the north. And for that to happen, Kochab has to be straight above Polaris.

4 planets and Moon 24June2022

Sky Tour Astronomy Podcast

June: Pre-dawn Planet-Palooza

Download this month's Sky Tour podcast to find out where and when to spot a rare alignment of five planets in the sky before dawn.

Crescent Moon passing Pollux and Castor, June 2-3, 2022

This Week's Sky At a Glance

This Week's Sky at a Glance, May 27 – June 4

The crescent Moon passes Pollux and Castor in the western twilight. Jupiter aligns with Mars in the dawn, then they edge apart. And a strong new meteor shower will either happen or it won't!

Geminid meteor shower

Meteors

Update on a Possible Outburst of Meteors

Will there be a new meteor shower on the night of May 30–31? There's only one way to find out.

Big Dipper

Explore the Night with Bob King

A New Way to See the Big Dipper

Unlike most asterisms, many of the Big Dipper's stars really are physically connected. They belong to a loosely bound stellar stream called the Ursa Major Moving Cluster.

Moon with Jupiter, Mars, Venus at dawn, May 25-27, 2022

Celestial News & Events

This Week's Sky at a Glance, May 20 – 28

The advancing spring sends Vega high and Capella low. The Coma Berenices cluster glitters shyly way up, big and dim. Glance up anytime to check on changing Beta Lyrae. And now in the dawn, Jupiter aligns with Mars.

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