121–140 of 2,476 results
Moon with Pleiades, Jupiter and Aldebaran at dusk, Apr. 28-29, 2025

This Week's Sky At a Glance

This Week's Sky at a Glance, April 25 – May 4

The Moon passes Mars when Mars passes the Beehive. Sirius, the Winter Star, sinks away in the southwest. Arcturus, the Spring Star, shines high toward the southeast. Vega, the Summer Star, is already nosing up in the northeast. All at once.

Vesta by Dawn

Celestial Objects to Observe

Asteroid Vesta Now an Easy Catch in Binoculars

Vesta, both protoplanet and asteroid, reaches opposition on May 2nd. From a dark sky it's even visible with the naked eye.

Jupiter over Aldebaran and the Pleiades after nightfall, April 18, 2025.

This Week's Sky At a Glance

This Week's Sky at a Glance, April 18 – 27

Bright Jupiter is getting lower in the west week by week and is nearly at its farthest from Earth. But it's still the brightest point in the evening sky, qualifying as the "Little Evening Star" in the absence of Venus.

Sky diagram showing Lyrid radiant among background stars

Celestial Objects to Observe

See the Lyrid Meteor Shower the Night of April 21–22

The annual Lyrid meteor shower should put on a great show this year. Enjoy it with a dash of the "dark side" of Saturn's rings.

Moon with Spica and Corvus, April 11-12, 2025

This Week's Sky At a Glance

This Week's Sky at a Glance, April 11 – 20

The bright Moon pairs with Spica on Saturday the 12th. Three nights later, the waning Moon in the small hours occults one of the head stars of Scorpius.

Comet C/2025 F2 (SWAN)

Celestial Objects to Observe

New Comet SWAN Now Visible in Small Scopes

A new comet discovered in spacecraft images is bright enough to make you get out of bed before dawn.

First-quarter Moon passing Mars, Pollux and Castor, April 4-5, 2025

This Week's Sky At a Glance

This Week's Sky at a Glance, April 4 – 12

The first-quarter Moon joins the Mars-Pollux-Castor trio, which are on their way to lining up straight. When the Moon turns full, it will meet Spica.

V7993 Sgr nova finder map

Variable Stars

New Nova in the "Teapot," Algol Blinks, and Uranus Occults a Star

A new nova for early risers plus three fun observing projects for the week ahead.

Leo-Cancer-Gemini-Hydra

Sky Tour Astronomy Podcast

April Podcast: Celestial Carnivores

This month we’ll watch bright planets come and go, track down some celestial carnivores, and enjoy a splash of mid-spring meteors. So grab your curiosity, and come along on this month’s Sky Tour episode.

This week, Venus rises in the east a little earlier in each morning's dawn.

This Week's Sky At a Glance

This Week's Sky at a Glance, March 28 – April 6

While waiting for sunrise on eclipse morning, can you catch Venus rising as a tiny, thin crescent? Go out earlier while the sky is still dark, and you get a preview of July evenings with Scorpius on the meridian.

Sunrise eclipse inferior mirage

Celestial Objects to Observe

Sunrise Solar Eclipse on March 29th for Eastern North America

The March 29th partial solar eclipse offers unique opportunities for photography and viewing alike.

Dwarf nova ilustration

Celestial Objects to Observe

T Coronae Borealis Isn't the Only Star Ready to Blow — Meet U Gem

As we wait on recurrent nova T CrB, dwarf nova U Geminorum is teeing up for its next 8-magnitude outburst.

A partial solar eclipse at sunrise in Delaware, 2021

This Week's Sky At a Glance

This Week's Sky at a Glance, March 21 – 30

If you're in the US northeast or eastern Canada, start planning for the sunrise partial eclipse on March 29th! In the night sky the stern of the ship Argo is at its highest, abutting the stern of Canis Major.

How accurately can you judge a true right angle? Watch the Castor-Pollux-Mars triangle high overhead to find out. Meanwhile, the waning gibbous Moon steps across Spica.

This Week's Sky At a Glance

This Week's Sky at a Glance, March 14 – 23

High overhead after dark, how accurately can you judge a celestial right angle? Watch the changing Castor-Pollux-Mars group to find out. Meanwhile the waning gibbous Moon will rise later and later, opening up dark-sky observing in the evening.

Total lunar eclipse sequence

Celestial Objects to Observe

Watch the Total Lunar Eclipse (March 13-14)

After more than two years, the Americas score a lunar eclipse bullseye.

Venus full circle

Observing

Venus Sprints from “Evening Star” to “Morning Star”

As Venus departs dusk for dawn, here's how to never lose sight of it.

Moon passing Mars, Castor and Pollux, March 7, 8, 9, 2025

This Week's Sky At a Glance

This Week's Sky at a Glance, March 7–16

A late-night total eclipse of the Moon highlights the coming week, and never mind that this is a minimoon. Sirius holds the meridian at nightfall, just as the Winter Triangle tips to balance on its brightest point.

How to spot Mercury in early March 2025

Sky Tour Astronomy Podcast

March Podcast: Planets, Stars, and Eclipses!

This month we’ll mark two seasonal transitions, watch eclipses of the Moon and Sun, track down the elusive planet Mercury, and trace out the Winter Hexagon. So grab your curiosity, and come along on this month’s Sky Tour.

Aurora swirls

Celestial Objects to Observe

North to the Aurora!

If the aurora won't come to you, go to it. The story of my quest to see the polar lights.

Thin Moon with Mercury and faint Saturn very low in twilight, Feb. 28, 2025

This Week's Sky At a Glance

This Week's Sky at a Glance, February 21 – March 2

Venus, after standing alone, is joined by the crescent Moon and low little Mercury in twilight late this week. Higher in the night, Jupiter and Mars continue in their distinctive triangles.