1–20 of 58 results
Jupiter and GRS

Planets

Big and Bright, Jupiter Beckons in January

Jupiter's having a special moment! Don't miss the giant planet at its best when it reaches opposition this week.

Saturn's rings Nov. 7, 2025

Planets

See Saturn's Rings at Their Thinnest

Saturn's as edgy as it'll get for the next 13 years. With special visual treats in store, here's what to keep eyes on the planet this month.

Titan shadow transit September 4, 2025

Planets

Last Call for a Remarkable Titan Shadow Transit

Titan joins its shadow for a "grand finale" this October.

Mars and Olympus Mons

Planets

Mars Extravaganza — Occultation and Opposition Rolled into One!

Mars is big and bright again! In a spectacular preview to its upcoming opposition, the full Moon occults the Red Planet on January 13th.

Jupiter outbreaks

Planets

You're Invited to Jupiter's Big, Bright Opposition Bash

Don't let the cold keep you inside — Jupiter beckons with a brand new storm!

Saturn edgewise

Planets

See Mutual Events, Close Approaches of Saturn's Moons

As Saturn's rings narrow, now's the time for its moons to shine.

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

Planets

Watch Jupiter's Moons in Unusual Lineups

You'll have five opportunities in the coming months to see Jupiter's moons in interesting alignments.

GRS 2017 Juno

Planets

Jupiter's Great Red Spot Just Keeps Getting Smaller

Jupiter's Great Red Spot may be reaching a milestone this year by shrinking to its smallest size in recorded observational history.

Orionid composite 2015-2022

Planets

Orionid Meteors Fly; Two Moons Shadow Jupiter

Bundle up and enjoy the Orionid meteor shower under moonless skies this week. Don't miss the warm-up act, either, when two of Jupiter's moons pair up in a captivating double-shadow transit.

Planets

Action-packed Sky: Saturn, Comet Nishimura, and More

September is Saturn's time to shine. We also check on Comet Nishimura — now at 5th magnitude and still brightening — and look forward to a dramatic asteroid occultation. Not to mention that Jupiter just took another hit.

Pandora

Planets

Moons of the Solar System

Not so long ago, astronomers thought only a few dozen moons orbited the planets of our solar system. Today, the total count tops 400!

June 2022 planets

Planets

All Eight Planets Line Up ... Again!

Echoing summer's great arc of planets at dawn, winter presents the full octet again, this time splayed across the evening sky.

Mars up close

Planets

Mars Mesmerizes at Opposition

It may not be the closest opposition, but this time around Mars arcs high across the sky where good seeing promises sharp views. That's not all. On December 7th, one night before opposition, the full Moon occults the Red Planet!

Jupiter up close

Planets

Jupiter's Exceptionally Close Opposition

A sentinel in the autumnal sky, Jupiter marks its closest opposition since 1963.

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!

Titan and Tethys

Planets

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.

Dawn planet line

Planets

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.

Saturn 2011 Cassini

Planets

Will Saturn Sprout Spots this Observing Season?

As Saturn returns to the morning sky, will this otherwise serene-looking planet experience another bout of severe weather? Keep your eyes peeled for white spots!

Full moon and Earth shadow

Planets

Uncovering Secrets of Earth's Shadow

The daily rising and setting of Earth's shadow is a beautiful sight anyone on the planet can view. It's also an opportunity to witness the rapid changes that accompany sunset or sunrise, but at the opposite end of the sky.

Earth and Uranus compared

Planets

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.