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graphic illustration of a laptop with the comet livestream poster on the screen.

Watch spectacular Comet Tsuchinshan-ATLAS rise during the early hours of Sept. 28 with this free livestream

By Daisy Dobrijevic published

Comet C/2023 A3 Tsuchinshan-ATLAS will reach perihelion — and if it survives its close call with the sun, we may be in for a real treat.

Comets
A satellite image of Hurricane Helene making landfall as a Category 4 storm on Sept. 26, 2024.

Satellites reveal Hurricane Helene's deadly fury as a monster Category 4 storm during landfall (videos)

By Tariq Malik published

Hurricane Helene slammed into Florida's Gulf Coast overnight Thursday (Sept. 26) with satellites capturing striking views of a colossal storm.

Earth
Six images of the Milky Way with different colors and star configurations. Some have gas tendrils, other are more speckled with sparkles.

Record-breaking Milky Way map showcases 1.5 billion objects: 'We have changed the view of our galaxy forever'

By Robert Lea published

A 13-year survey conducted by the VISTA telescope has resulted in the creation of the most detailed Milky Way map ever. It contains a stunning 1.5 billion objects.

Galaxies
The moon phases of September 2024 listed with dates. the new moon on Sept 2, the first quarter on sept 11, the full moon on sept 17 and the third quarter moon phase on sept 24.

What is the moon phase today? Lunar phases 2024

By Tariq Malik last updated

Reference See what moon phase it is tonight and find out when you can see the rest of the moon phases for 2024.

Reference
A reddish brown sphere surrounded by a halo of white smoke next to a smaller shining silver sphere.

This exoplanet circling a dead star may mirror Earth's fate — if our planet survives a dying sun, that is

By Robert Lea published

A newly discovered Earth-size world orbiting a dead white dwarf star gives scientists a hint of what the solar system may look like in billions of years.

Exoplanets
A giant circular computing machine hollow in the center where a thin copper tube passes through. It's like the retina of a giant robot eye.

The W boson caused a particle mystery — but scientists have cracked the case

By Keith Cooper published

A puzzling discrepancy in measurements of the mass of the W+ and W– bosons, which are fundamental particles that carry the weak force, has been resolved by the Large Hadron Collider.

The Universe
A blue, white and green sphere next to a white/grey sphere and an irregular grey and black rock

Earth will capture 'second moon' this weekend, scientists say

By Robert Lea published

Earth will get a "new moon" this weekend when, on Sunday (Sept. 29), it captures the asteroid 2024 PT5, claiming it as a very temporary "mini-moon."

Asteroids
A black and white asteroid moves around in a grainy video.

Radar images capture snowman-shaped object tumbling past Earth

By Sharmila Kuthunur published

Radar images have captured snowman-shaped 2024 ON asteroid tumbling through space.

Asteroids
A cracked and bruised reddish brown sphere surround by white smoke

Where did Mars' atmosphere go? Scientists say it may be 'hiding in plain sight'

By Robert Lea published

New research suggests that the atmosphere of Mars could have literally "gone to ground" as carbon dioxide was greedily slurped out of the atmosphere and locked away by Red Planet clays.

Mars
Satellite footage of the hurricane moving toward Florida.

Hurricane Helene could yield major flooding, tornadoes and 'devastating' winds, experts warn

By Monisha Ravisetti published

Tropical Storm Helene reached hurricane status on Wednesday (Sept. 25), and scientists warn that its damage could be life-threatening.

Earth
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