Astronomers don't know why Jupiter's iconic Great Red Spot has been gradually shrinking since the 1800s — or why the downsizing has accelerated during the past two years. Update: On May 15th, NASA released newly taken images of the Great Red Spot (at bottom below) to show its declining size since 1995. Thanks to...
North Americans haven't seen a total eclipse of the Moon since 2011. But this long dry spell breaks late on the night of April 14–15 as the Moon makes a leisurely pass through Earth's deepest shadow.
Mars is making its nearest and brightest appearance in the night sky since the end of 2007.
It's a great month, celestially speaking: the brilliant stars of winter crowd in the southwest at nightfall, Jupiter is joined by Mars, and the first total lunar eclipse in 2½ years occurs at mid-month.
There was widespread hope that thousands of skywatchers would see the bright star Regulus briefly occulted by an asteroid early on March 20th. In the end, likely <u>no one</u> saw it. Here's why.
Bright Regulus will dramatically snap out of view behind a faint asteroid for several seconds very late Wednesday night for well-placed viewers — if the sky clears!!
Uranus and Neptune are easy to find with the aid of the charts in this article.
A stunning array awaits you overhead once the Sun sets. Brilliant Sirius, along with Procyon, Betelgeuse, and even-brighter Jupiter, form a giant diamond in the evening sky.
On Thursday, May 29th, Comet 209P/LINEAR will pass just 5 million miles (8 million km) from Earth, one of the closest comet approaches in history.
If your dawn sky is clear on Wednesday, February 26th, don't miss the lovely pairing of brilliant Venus with a very thin crescent Moon.
Supernova 2014J, in the galaxy M82 in Ursa Major, peaked at magnitude 10.5 in early February and is now down to 11.2. Spot it with your telescope above the Big Dipper.
The King of Planets reached opposition in the first half of January but it's still big and bright, a captivating sight no matter how you look at it.
The two brightest asteroids are very close to each other in the sky in 2014, fitting in a single field of view through binoculars and some telescopes.
Jupiter is well up in the east as darkness falls, surrounded by a cohort of bright winter stars and constellations.
Mercury puts on its best show of the year for mid-northern latitudes around the end of January.
UPDATE: No significant auroras were reported Thursday morning following the Sun's whopper coronal mass ejection on January 7th. But there's still some chance of a mid-latitude light show as the hours go by.
The Sun is off to a fast start this new year. An enormous sunspot group, big enough to be seen (carefully) by eye, has rotated into view.
Soon after sunset on New Year's Day, you may have a chance to set your lifetime youngest-Moon record.
Sky & Telescope predicts that 2014's best meteor shower won't be one of the traditional displays. Instead, on May 24th the predawn skies over North America might come alive with a robust display of "shooting stars" shed by Comet 209P/LINEAR.
This year features three celestial cover-ups that favor North Americans: total lunar eclipses on April 15th and October 8th, and a partial solar eclipse on October 23rd.
Start the new year right with a little evening stargazing! Venus is dropping from sight low in the west just as Jupiter and mighty Orion are ascending in the east.
Start the new year right by viewing an excellent but short-lived meteor shower, called the Quadrantids, which peaks on Friday, January 3rd.
Venus usually appears pretty boring through a telescope. But from mid-December to mid-February it's a spectacularly long, thin crescent.
Astronomers report that a nearly forgotten meteor shower — famous for its prodigious "storm" in 1872 but long since inactive — has displayed surprising activity.
Bits of rock from a fried asteroid flash across the night sky in the mid-December sky — but bright moonlight will diminish the performance.