Jupiter has dozens of moons. Four of them in particular are of interest to planetary scientists.
Space News & Blog Articles
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Don't miss the Taurid meteor shower peak with colorful fireballs and shooting stars this week
Don't miss the Taurid meteor shower peak with colorful fireballs and shooting stars this week
'Alien vs. Predator' 20 years later: What went right and what went wrong?
With both Alien and Predator back in action, here's what we can learn from their first big-screen crossover two decades ago.
Boost for Mars life? Red Planet's magnetic field may have lasted longer than thought
Mars' global magnetic field may have hung around for 200 million years longer than scientists had thought, possibly giving life a longer window to take hold on the Red Planet.
SpaceX scrubs Starlink satellite launch due to apparent rocket helium leak
SpaceX scrubbed a planned launch of 23 Starlink satellites on Sunday (Nov. 3) due to a helium issue in the first stage of the company's Falcon 9 rocket.
Watch SpaceX launch 3 tons of cargo to ISS today
Liftoff is scheduled for 9:29 p.m. ET today (Nov. 4).
See the moon snuggle up to Venus after sunset tonight
Monday evening (Nov. 4), the night before Election Day, will bring a lovely celestial display involving the two brightest objects in the nighttime sky: the moon and Venus.
Watch Rocket Lab launch mystery mission early on Nov. 5
Rocket Lab plans to launch a mission for a "confidential commercial customer" early Tuesday morning (Nov. 5), and you can watch the action live.
Japan launches military communications satellite on 4th flight of H3 rocket
Japan launched the Kirameki 3 military communications satellite Monday morning (Nov. 4), on the fourth-ever flight of the country's H3 rocket.
Plastic Waste on our Beaches Now Visible from Space, Says New Study
According to the United Nations, the world produces about 430 million metric tons (267 U.S. tons) of plastic annually, two-thirds of which are only used for a short time and quickly become garbage. What’s more, plastics are the most harmful and persistent fraction of marine litter, accounting for at least 85% of total marine waste. This problem is easily recognizable due to the Great Pacific Garbage Patch and the amount of plastic waste that washes up on beaches and shores every year. Unless measures are taken to address this problem, the annual flow of plastic into the ocean could triple by 2040.
Live coverage: SpaceX to launch Starlink satellites on a Falcon 9 rocket from Cape Canaveral
File: A Falcon 9 rocket stands in the launch position at Space Launch Complex 40 (SLC-40) at Cape Canaveral Space Force Station ahead of the planned liftoff of the Starlink 6-61 mission on Oct. 22, 2024. Image: Adam Bernstein/Spaceflight Now
Update Nov. 3, 1:42 p.m. EST: Added information about the booster flying this mission.
Future Space Telescopes Could be Made From Thin Membranes, Unrolled in Space to Enormous Size
Space-based telescopes are remarkable. Their view isn’t obscured by the weather in our atmosphere, and so they can capture incredibly detailed images of the heavens. Unfortunately, they are quite limited in mirror size. As amazing as the James Webb Space Telescope is, its primary mirror is only 6.5 meters in diameter. Even then, the mirror had to have foldable components to fit into the launch rocket. In contrast, the Extremely Large Telescope currently under construction in northern Chile will have a mirror more than 39 meters across. If only we could launch such a large mirror into space! A new study looks at how that might be done.
Explore a long-lost Starfleet ghost ship in new 'Star Trek: Lower Decks' comic (exclusive)
Space.com has an exclusive three-page preview of IDW's new "Star Trek: Lower Decks #1" comic.
Everything we know about 'Tron: Ares'
Disney is returning to the Grid with "Tron: Ares" in 2025, but the threat may be in the real world this time around.
Chef Duff Goldman spins up moon-shaped cake for NASA 'Taste of Space'
Duff Goldman, the host of the Food Network show "Ace of Cakes," has for a third year brought a space-themed cake to the Kennedy Space Center Visitor Complex.
'Cosmic inflation:' did the early cosmos balloon in size? A mirror universe going backwards in time may be a simpler explanation
We live in a golden age for learning about the universe. Our most powerful telescopes have revealed that the cosmos is surprisingly simple on the largest visible scales.
ULA’s Vulcan rocket in “final phase” of certification, awaiting first national security launch date
United Launch Alliance (ULA) hoists its Centaur V upper stage atop the Vulcan first stage booster into the Vertical Integration Facility-G (VIF-G) adjacent to Space Launch Complex-41 at Cape Canaveral Space Force Station, Florida. Image: United Launch Alliance
United Launch Alliance continues to make strides towards launching its first national security mission with its Vulcan rocket, but the exact timing of that launch remains uncertain.
China's Shenzhou 18 astronauts return to Earth after 6 months in space (video)
China's Shenzhou 18 crew have returned home after more than six months in space.
Voyager 1 is Forced to Rely on its Low Power Radio
Voyager 1 was launched waaaaaay back in 1977. I would have been 4 years old then! It’s an incredible achievement that technology that was built THAT long ago is still working. Yet here we are in 2024, Voyager 1 and 2 are getting older. Earlier this week, NASA had to turn off one of the radio transmitters on Voyager 1. This forced communication to rely upon the low-power radio. Alas technology around 50 years old does sometimes glitch and this was the result of a command to turn on a heater. The result was that Voyager 1 tripped into fault protection mode and switch communications! Oops.
Webb Confirms a Longstanding Galaxy Model
Perhaps the greatest tool astronomers have is the ability to look backward in time. Since starlight takes time to reach us, astronomers can observe the history of the cosmos by capturing the light of distant galaxies. This is why observatories such as the James Webb Space Telescope (JWST) are so useful. With it, we can study in detail how galaxies formed and evolved. We are now at the point where our observations allow us to confirm long-standing galactic models, as a recent study shows.
The Aftermath of a Neutron Star Collision Resembles the Conditions in the Early Universe
Neutron stars are extraordinarily dense objects, the densest in the Universe. They pack a lot of matter into a small space and can squeeze several solar masses into a radius of 20 km. When two neutron stars collide, they release an enormous amount of energy as a kilonova.
