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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

Celestial News & Events

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.

This Week's Sky At a Glance

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.

Venus and Mercury in twilight, Sept. 5, 2021

Celestial News & Events

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

Spica glimmers demurely under showy Venus in the western twilight. Try for Mercury way down to their lower right. Jupiter and Saturn dominate the evening south.

Comet 4P/Faye and tail

Solar System

Making Time for Morning Comets

If you like mixing comets with the quietude of observing in the small hours, September opens with five fuzzy vagabonds just waiting for a visit.

Jupiter and Saturn in Capricornus, early Sept. 2021

Celestial News & Events

This Week's Sky at a Glance, Aug. 27 – Sept. 4

Venus, Jupiter, and Saturn are all getting a little higher in early evening. Vega passes the zenith soon after dark; Deneb does so two hours later. Andromeda is up in the east.

Moon under Saturn and Jupiter, Aug. 20-21, 2021

This Week's Sky At a Glance

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

Jupiter and Saturn are just past opposition, so they dominate the sky all night. They inhabit dim Capricornus, which pushes Sagittarius westward. Venus, even showier, owns the western twilight but sets by full darkness.

Jupiter, Ganymede, Europa and double shadows, March 25, 2019

Planets

The 12-Year Cycle of Jupiter Oppositions

Jupiter is at opposition on August 19th. If we take the long view — 12 years long — we can watch Jupiter's oppositions as it passes through the zodiac constellations.

Moon

It’s the Blue Moon . . . the “True” Blue Moon!

If skies are clear this weekend, you'll see the full Moon. And not just any old full Moon, but the Blue Moon . . . the "true" Blue Moon!

Jupiter and GRS

Explore the Night with Bob King

Jupiter Dazzles at Its Brightest and Closest This Year

Jupiter comes to opposition on August 20th, when it will shine brighter and closer than at any other time this year. With nights starting earlier and cooler temperatures arriving, there's no better time to make the most of the planet.

The waxing gibbous Moon passing over Scorpius, Aug. 16-17, 2021

This Week's Sky At a Glance

This Week's Sky at a Glance, August 13 – 21

The Moon waxes from first quarter to gibbous in the evening sky, offering some of its most interesting telescopic aspects. Venus grows more insistent in the western twilight. And Jupiter and especially Saturn pose well in the southeast to south by late evening.

Celestial News & Events

Fine Show Expected from the Perseid Meteor Shower

With no interference from the Moon, this year's Perseid meteor shower should be excellent. If you couldn't catch the show last night, try looking up tonight!

RS Oph animation

Celestial News & Events

Recurrent Nova RS Ophiuchi Just Blew its Top!

The recurrent nova RS Ophiuchi just went into outburst — its first burst in 15 years — and it's bright enough to see with the naked eye

Crescent Moon passing Venus, Aug 9-11, 2021

Celestial News & Events

This Week's Sky at a Glance, August 6 – 14

It's Perseid meteor week! Venus lights the western twilight. Saturn and Jupiter are up in the southeast by mid-twilight and await your telescope later at night. And explore the deep-sky glories of Sagittarius before moonlight returns.

Waning Moon crossing Gemini, Aug. 5-6, 2021

This Week's Sky At a Glance

This Week's Sky at a Glance, July 30 – August 7

Saturn is at opposition this week, and Jupiter is soon to follow. Will your scope show the Seeliger effect of Saturn's opposition rings? Venus continues to haunt the low west in twilight. And in the south, Sagittarius starts nudging Scorpius aside.

Doubles map east

Explore the Night with Bob King

Dazzling Double Stars for Compromised Skies

For many, smoke from wildfires has transformed summer nights, blotting out stars and familiar deep-sky sights. But through it all double stars keep on shining.

This Week's Sky At a Glance

This Week's Sky at a Glance, July 23 – 31

Saturn and Jupiter shine in the southeast by late evening. The bright Moon passes them on the 24th through 26th. Venus continues to sit patiently, changelessly, low in the west in twilight. Bootes and the Big Dipper mark the western sky after dark; the Summer Triangle emblazons the east.

Venus, Regulus, Mars low in twilight, July 21, 2021

This Week's Sky At a Glance

This Week's Sky at a Glance, July 16 – 24

Venus shines in the western twilight as Mars sinks away. Jupiter and Saturn rise in late dusk. And after dark, Scorpius shows off at its very best in the south.

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