Solar wind is causing 'major disturbance' to comet SWAN (C/2025 R2) gliding through space
New observations from an astronomer reveal a highly reactive comet tail, which showed remarkable changes in just ten minutes.
6 hours ago
Giant asteroid 2025 RL2 to make closest approach to Earth this week—when and how to watch
The asteroid will zoom past our planet at a distance of just 134,566 miles (about 216,563 kilometers).
10 hours ago
Massive asteroid once feared a threat to Earth set for close flyby on September 18
The asteroid, officially named 2025 FA22, is roughly the height of a skyscraper, with an estimated width of 130 to 290 meters.
1 day ago
Moon phases 2025: When is the next new moon
Due to a direct alignment between the Sun, Moon, and Earth, a new moon is invisible from our perspective because the side of the moon facing us is completely unlit.
1 day ago
Don't miss Neptune's closest approach to Earth on September 23—where to find it in the evening sky
This rare event, known as opposition, occurs when the Sun, Earth, and Neptune align, causing the planet to appear brighter and more prominent in the night sky.
1 day ago
Halley's Comet will return in 2061—for 1980s kids, it will be a full-circle moment
The celestial event will mark a generational milestone for those who witnessed its last appearance in 1986.
2 days ago
Will the northern lights be visible tonight? Here's what the forecast says
If conditions line up, moderate storms could also unfold, making the aurora borealis visible in regions like Canada and Alaska.
2 days ago
New comet SWAN25B discovered in September 2025—here are viewing tips and its likely coordinates
The comet SWAN25B was initially detected by the Solar Wind Anisotropies (SWAN) instrument on the SOHO spacecraft.
3 days ago
'God of Chaos' asteroid would be visible to the naked eye in a once-in-a-millennium celestial event
An asteroid of this immense size, roughly 1,100 feet wide, only makes a close approach to Earth once every 7,500 years, according to scientific estimates.
3 days ago
How to spot 'swan-shaped' Cygnus constellation in the September night sky
A striking, swan-shaped constellation known as the Northern Cross, Cygnus is the 16th largest constellation and a rich section of the Milky Way.
6 days ago
2025 partial solar eclipse: When and how to watch the astronomical phenomenon on September 21
The eclipse belongs to the Saros cycle, a well-documented celestial pattern that repeats approximately every 18 years and 11 days.
Sep 10, 2025
In pics: 'Blood Moon' total lunar eclipse as seen from Japan, Egypt, India and across the globe
The stunning astronomical event marked the longest eclipse of its kind since 2022, with the moon appearing a vivid red for a remarkable 82 minutes.
Sep 8, 2025
Best time to see the September Epsilon Perseids—all you need to know
The relatively lesser-known September Epsilon Perseids from the constellation Perseus will be at their best after midnight.
Sep 6, 2025
Next total lunar eclipse visible in Americas—don't miss the March 2026 'Blood Moon'
A spectacular total lunar eclipse is set to captivate skywatchers this week, but the celestial show will not be visible from the Americas.
Sep 5, 2025
Blood Moon 2025: How to watch the total lunar eclipse in the U.S. on September 7
The September 7 'blood moon' will be a global event, visible to viewers in Africa, Asia, and Australia, but not to those in the Americas.
Sep 4, 2025
NASA's September 2025 skywatching guide: Autumnal equinox, a conjunction trio and other stunning sky events
This month offers a stellar lineup, featuring a planetary opposition, a beautiful conjunction, the arrival of the autumnal equinox and a lunar eclipse.
Sep 4, 2025
Ahead of September 7 Blood Moon, effective tips for observing the total lunar eclipse
During the globally synchronized total lunar eclipse, the moon will display a deep red hue for about 82 minutes, offering excellent opportunities for photography.
Sep 3, 2025
Saturn's largest moon Titan to cast a shadow on the planet's face on September 3—how to watch
This celestial event is part of a rare series of passes that occurs only once every 15 years.
Sep 2, 2025
Here's why the moon turns red during a total lunar eclipse
During a total lunar eclipse, the Earth casts a shadow on the Moon while some sunlight, scattered by our atmosphere, still manages to illuminate the lunar surface.
Sep 2, 2025
Blood moon total lunar eclipse to light up the sky on September 7—find out if it's visible in your country
The second and final total lunar eclipse of the year, a striking celestial event known as a 'blood moon,' is set to captivate skywatchers across much of the globe.
Sep 1, 2025