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A rocket engine flame is seen peaking through some fog, but only barely.

SpaceX launches 100th Starlink mission of 2025

By Mike Wall last updated

SpaceX launched its 100th Starlink mission of the year on Friday (Oct. 31), from a foggy Vandenberg Space Force Base, in California.

Launches & Spacecraft
The 3I/Atlas comet brightening by an unexpected about as it approaches the sun

Interstellar invader Comet 3I/ATLAS is still full of surprises — an unexpected brightening has scientists baffled

By Robert Lea published

"The reason for 3I’s rapid brightening, which far exceeds the brightening rate of most Oort cloud comets at similar distances, remains unclear."

Comets
A still showing the eye of Hurricane Melissa subdivided into smaller holes in swirling white clouds

Satellite images show 'mesovortices' forming around the eye of deadly Hurricane Melissa

By Elizabeth Howell published

Footage from a NOAA satellite taken Oct. 28 shows Melissa’s deadly spin as it moves across the Caribbean.

Earth
A deep space scene is pictured featuring glowing red nebula clouds that form the outline of a bat's body and wings, threaded with dark filaments of interstellar gas against a teeming starfield.

Astronomers capture vast cosmic bat spreading its wings in time for Halloween (photo)

By Anthony Wood published

The European Southern Observatory captured a nebula bat during a survey of the Milky Way's galactic plane.

Astrophotography

Best sci-fi horror books: Top sci-fi horror reads to haunt your Halloween

By Kenna Hughes-Castleberry published

From Orwell's dystopian paranoia to Jeff VanderMeer's ecological nightmares, these science-fiction horror novels explore fear on every scale.

Space Books
SAVE NASA hangs in front of a torn up photo as black and white protesters hold signs in the bottom foreground.

NASA is sinking its flagship science center during the government shutdown — and may be breaking the law in the process, critics say

By Josh Dinner last updated

"There is just a general acknowledgement that a lot of what is happening is illegal…"

Space Exploration
A bright comet is pictured against a black starry sky with its bright central coma visible to the lower left of the image from which a bright tail extends to the upper left.

Trick or treat: Here's where to find comets Lemmon, SWAN and 3I/ATLAS in the Halloween sky

By Anthony Wood published

Read on to discover where comets Lemmon, SWAN and 3I/ATLAS are in the Halloween night sky on Oct. 21 and find out if they're a stargazing trick, or a telescopic treat.

Stargazing
Man uses one of the best telescopes and binoculars to look at the night sky as the sun sets and telescopes are on tripods around him

Best telescopes ahead of Black Friday 2025: Observe stars, galaxies and nebulas

By Gemma Lavender last updated

Buying Guide These are the best telescopes for stargazing and astronomy. Stay tuned for Black Friday on Nov. 28

Buying Guide
A blazar accelerates protons (the yellow p) to the energy levels of cosmic rays, initiating a complex quantum cascade that also releases gamma rays (magenta) and neutrinos (blue), which follow straight paths through space. The coupled detection of these two particles enabled astronomers to identify the blazar as a source of cosmic rays.

'Ghost particles' can zoom through you without a trace. Scientists are getting to the bottom of this cosmic mystery

By Robert Lea published

Scientists are searching for answers in the cosmic mystery of ghost particles known as neutrinos.

Particle Physics
Screenshots showing a rocket blasting off from a launch pad

China launches Shenzhou 21 astronauts to Tiangong space station for a 6-month stay (video)

By Andrew Jones published

Shenzhou 21, China's latest astronaut mission, is on its way to the Tiangong space station after a Friday (Oct. 31) launch from the Gobi Desert.

Launches & Spacecraft
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