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Astronomy & Space news
Time-delay cosmography may enable a speed camera for the universe
There is an important and unresolved tension in cosmology regarding the rate at which the universe is expanding, and resolving this could reveal new physics. Astronomers constantly seek new ways to measure this expansion ...
Astronomy
4 hours ago
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Earlier ultra-relativistic freeze-out could revive a decades-old theory for dark matter
A new theory for the origins of dark matter suggests that fast-moving, neutrino-like dark particles could have decoupled from Standard Model particles far earlier than previous theories had suggested.
A new look at TRAPPIST-1e, an Earth-sized, habitable-zone exoplanet
Of the seven Earth-sized worlds orbiting the red dwarf star TRAPPIST-1, one planet in particular has attracted the attention of scientists. This planet orbits the star within the "Goldilocks zone"—a distance where water ...
Astronomy
12 hours ago
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Astrophysicists test a new piece of the sky to probe dark matter and dark energy
In the leading model of cosmology, most of the universe is invisible: a combined 95% is made of dark matter and dark energy. Exactly what these dark components are remains a mystery, but they have a tremendous impact on our ...
Astronomy
12 hours ago
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49
Space debris poses growing threat, but new study suggests cleanup is feasible
High up in Earth's orbit, millions of human-made objects large and small are flying at speeds of over 15,000 miles per hour. The objects, which range from inactive satellites to fragments of equipment resulting from explosions ...
Space Exploration
11 hours ago
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NASA completes Nancy Grace Roman Space Telescope construction
NASA's next big eye on the cosmos is now fully assembled. On Nov. 25, technicians joined the inner and outer portions of the Nancy Grace Roman Space Telescope in the largest clean room at the agency's Goddard Space Flight ...
Astronomy
13 hours ago
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Frequent flares from TRAPPIST-1 could impact habitability of nearby planets
Like a toddler right before naptime, TRAPPIST-1 is a small yet moody star. This little star, which sits in the constellation Aquarius about 40 light-years from Earth, spits out bursts of energy known as "flares" about six ...
Astronomy
13 hours ago
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3
Most normal matter in the universe isn't found in planets, stars or galaxies: An astronomer explains
If you look across space with a telescope, you'll see countless galaxies, most of which host large central black holes, billions of stars and their attendant planets. The universe teems with huge, spectacular objects, and ...
Astronomy
16 hours ago
2
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Ten versions of Earth's future can help us hunt for technosignatures
Searching for technosignatures—signs of technology on a planet that we can see from afar—remains a difficult task. There are so many different factors to consider, and we only have the technological capabilities to detect ...
Astrobiology
16 hours ago
2
5
Space debris: Will it take a catastrophe for nations to take the issue seriously?
China routinely sends astronauts to and from its space station Tiangong. A crew capsule is about to undock from the station and return to Earth, but there's nothing routine about its journey home.
Space Exploration
10 hours ago
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1
First discoveries from new Subaru Telescope program reveal massive planet and brown dwarf
Astronomers using the Subaru Telescope in Hawaiʻi have discovered a massive planet and a brown dwarf orbiting distant stars. The discoveries are the first results from OASIS (Observing Accelerators with SCExAO Imaging Survey), ...
Astronomy
20 hours ago
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Chlorine and potassium found in supernova remnant at unexpectedly high levels
"Why are we here?" is humanity's most fundamental and persistent question. Tracing the origins of the elements is a direct attempt to answer this at its deepest level. We know many elements are created inside stars and supernovae, ...
Astronomy
23 hours ago
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Trump NASA nominee aims to beat China in new moon race
Jared Isaacman, US President Donald Trump's two-time appointee to lead NASA, said it was his goal that the United States beat rival China in the race to return humans to the moon, during a Senate confirmation hearing Wednesday.
Space Exploration
14 hours ago
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How sound moves on Mars
Acoustic signals have been important markers during NASA's Mars missions. Measurements of sound can provide information both about Mars itself—such as turbulence in its atmosphere, changes in its temperature, and its surface ...
Planetary Sciences
15 hours ago
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A blueprint for visiting an interstellar comet
Sometime in 2029, the European Space Agency is scheduled to launch its Comet Interceptor Mission. The Interceptor will wait for a long-period comet to arrive in the inner solar system then set off on a trajectory to rendezvous ...
Space Exploration
18 hours ago
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Planned industrial plant threatens large observatory in Chile
MPE Director and Nobel Laureate Reinhard Genzel is spearheading an open letter signed by nearly 30 eminent international astronomers urging the Chilean government to relocate the proposed INNA industrial complex. The project ...
Astronomy
15 hours ago
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Astronomers find vast spinning filament of galaxies 140 million light-years away
An international team led by the University of Oxford has identified one of the largest rotating structures ever reported: a "razor-thin" string of galaxies embedded in a giant spinning cosmic filament, 140 million light-years ...
Astronomy
Dec 3, 2025
1
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Debris disk gallery shows tell-tale signs of asteroids and comets in distant solar systems
Observations with the instrument SPHERE at ESO's Very Large Telescope have produced an unprecedented gallery of "debris disks" in exoplanetary systems.
Astronomy
Dec 3, 2025
2
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Interstellar object covered in 'icy volcanoes' could rewrite our understanding of how comets formed
Analysis of the second confirmed interstellar comet to visit our solar system suggests that the alien body could be covered in erupting icy, volcano-like structures called cryovolcanoes. Researchers also discovered that the ...
KIC 5623923 is a faint eclipsing binary exhibiting Delta Scuti-type pulsations, observations find
Using NASA's Kepler space telescope, Chinese astronomers have observed a binary star system known as KIC 5623923. As a result, they found that the investigated system is a faint eclipsing binary experiencing Delta Scuti-type ...
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Hubble seeks clusters in 'Lost Galaxy'
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NASA's Fly Foundational robots demo to bolster in-space infrastructure
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Spaceflight-tested menstrual cup offers choice on long missions
Sun-watcher SOHO celebrates 30 years
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A solid-state quantum processor based on nuclear spins
New massive duck-billed dinosaur species identified
Nanotyrannus was not a juvenile T. rex, new study confirms
New statistical tools sharpen the search for causal DNA changes in livestock
AI chatbots can effectively sway voters—in either direction
Before trips to Mars, we need better protection from cosmic rays
Image: Sagittarius B2 molecular cloud
SpaceX gets OK to build up Starship pads at Canaveral site
SpaceX launch kicks off busy December on Space Coast
