61–80 of 454 results
Europa eclipses then occults Io

Celestial News & Events

Mutual Event Season Heats Up at Jupiter

Jupiter is usually the one occulting and eclipsing the Galilean moons, but this observing season the moons also eclipse and occult one another.

Deep image of V1405 Cas nova

Celestial News & Events

Bright Nova Erupts in Cassiopeia

A new nova in Cassiopeia, discovered on March 18th, is bright enough to see in a small telescope.

NGC 3190 group / Hickson 44

Explore the Night with Bob King

Exploring Bright Galaxy Groups in Leo

Leo, the Lion, stands high in the southern sky during the early spring. We visit some of the constellation's brighter galaxy clumps then go asteroid hunting.

Alnilam in Orion

Night Sky Sights

Meet Alnilam, Orion’s Belt Buckle

Alnilam, the middle star of Orion's distinctive belt, is a distant supergiant that will (eventually) end its life in a supernova.

Battered Vesta

Explore the Night with Bob King

March — A Good Time to Visit Vesta

Dip into this easy guide to seeing the brightest asteroid, Vesta, and understanding what makes it unique.

IC 418 planetary nebula

Celestial News & Events

A Deep-sky Hippity-hop through Lepus, the Hare

Snare a dozen bright double stars and deep-sky objects in the celestial Hare the next clear night. We also provide details on how to watch the potentially hazardous asteroid Apophis occult a star the night of February 21st.

Daytime planet fest

Daylight Phenomena

Planets and Comets Can't Hide from SOHO's Eye

With the help of the Solar Heliospheric Observatory you can not only keep track of the planets in the daytime sky but maybe even discover a comet.

Castor and Pollux

Meet the Stars

Meet Castor, Six Stars in One

Castor, a prime ornament of the Gemini constellation and one of the brightest stars in the sky, is actually a system of stars with six unique members.

Total lunar eclipse path on May 26, 2021

Celestial News & Events

Solar and Lunar Eclipses in 2021

Four eclipses occur in 2021, with annular and total solar eclipses alternating between total and not-quite-total lunar eclipses.

Comet 67P/Churyumov-Gerasimenko

Explore the Night with Bob King

Comet Watch 2021

If you own an 8-inch or larger telescope you might see more than a dozen new and returning comets this year, including one potential naked-eye candidate.

Deep-sky map Capella region

Explore the Night with Bob King

Foraging for Deep-sky Delights with Capella, the Goat Star

We explore deep-sky riches within a stone's throw of Capella, one of the season's brightest stars.

Kochab in the Little Dipper

Meet the Stars

Meet Kochab, a Guardian of the Pole

Meet the stars: Kochab is no record-breaking bright star, but it's easy enough to find — and it may have played an important role through history.

Leonid fireball crossing Orion

Night Sky Sights

The Best Meteor Showers in 2021

Sky & Telescope predicts that the year's best meteor shower will be the strong, fireball-rich Perseids in mid-August.

Aldebaran vs. the Sun

Night Sky Sights

Meet Aldebaran, the Bull’s Eye

Learn more about Aldebaran, the red-orange giant star that "follows" the Pleiades across the sky.

Capella and the Kids

Celestial Objects to Observe

Meet Capella, the Goat Star

Capella is the sixth-brightest star in the sky — and it's more than one star! The main two stars in the system are near-twins, bright yellow giants.

2001 Leonid storm

Explore the Night with Bob King

Leonid Meteor Shower to the Rescue

Modest but reliable, the annual Leonid meteor shower returns this week. Take an hour or two to relax and enjoy the show.

ATLAS with a tail

Comets

Comets Crawl through the Skies at Dawn and Dusk

Comets have been scarce since NEOWISE departed the scene. Not anymore. Suddenly, there are four fresh faces visible from dusk til dawn.

Bootes and the Big Dipper

Meet the Stars

Meet Arcturus: Guardian of the Bear

Arcturus is one of the brightest stars in the sky — a cool red giant in Bootes, the Herdsman, that's often tied mythologically to Ursa Major, the Bear.

Moon over Sequoia National Park

Celestial News & Events

International Observe the Moon Night Is Here

International Observe the Moon Night is here. Step outside Saturday evening and admire our closest celestial neighbor with your family.

Caroline's Cluster

Celestial Objects to Observe

Explore Caroline Herschel's Celestial Showpieces

More than 200 years ago Caroline Herschel pointed her telescope at the heavens and discovered some of the finest deep-sky objects. Follow in her footsteps and see them for yourself.

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