New discoveries from NASA's James Webb Space Telescope offer unexpected support for an alternate theory of gravity first proposed in 1998.

An international team of astronomers has discovered an instance of two galaxies aligned in a way where their gravity acts as a compound lens. The group has written a paper describing the findings and posted it on the arXiv preprint server.

All the major elements of NASA’s next flagship space telescope are now under one roof as NASA says its development remains on cost and schedule.

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.

Demand for observing time on Webb outpaces supply by a factor of nine.

May explain how the Universe built supermassive black holes so quickly after the Big Bang.

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.

Two sister meteor showers are already flashing across night skies—and will peak a week apart.

NASA's Nancy Grace Roman Space Telescope team has successfully completed integration of the Roman Coronagraph Instrument onto Roman's Instrument Carrier, a piece of infrastructure that will hold the mission's instruments, which will be integrated onto the larger spacecraft at a later date. The Roman...

On a mountaintop in northern Chile, the Vera C. Rubin Observatory, which holds the largest digital camera in the world, is preparing to power up.

NASA has revealed the first look at a full-scale prototype for six telescopes that will enable, in the next decade, the space-based detection of gravitational waves — ripples in space-time caused by merging black holes and other cosmic sources. The LISA (Laser Interferometer Space Antenna) mission i...

Life showed up really early on Earth – it needed complex carbon molecules to do so. A new discovery hints that these molecules can survive the harsh conditions when stars are born.

This NASA/ESA Hubble Space Telescope image features the striking spiral galaxy Messier 90 (M90, also NGC 4569), located in the constellation Virgo. In 2019, Hubble released an image of M90 created with Wide Field and Planetary Camera 2 (WFPC2) data taken in 1994, soon after its installation.

A massive NASA spacecraft is ready to set sail for Jupiter and its moon Europa. The craft named Europa Clipper will peer beneath the moon's icy crust and determine whether conditions there could support life.

Surely, exoplanets have moons, too.

Scientist Jim Wild has traveled to the Arctic Circle numerous times to study the northern lights, but on Thursday night he only needed to look out of his bedroom window in the English city of Lancaster.

The first moving images of a black hole could reveal swirls of plasma and collapsing stars, deepening our understanding of the universe.

When three massive objects meet in space, they influence each other through gravity in ways that evolve unpredictably. In a word: Chaos. That is the conventional understanding. Now, a researcher from the University of Copenhagen has discovered that such encounters often avoid chaos and instead follo...

Here's what to look for.

The first satellites of a Chinese broadband constellation are significantly brighter than those of Western systems, posing a new challenge for astronomers.

Using the European Southern Observatory’s Very Large Telescope (ESO’s VLT), astronomers have discovered an exoplanet orbiting Barnard’s star, the closest single star to our Sun. On this newly discovered exoplanet, which has at least half the mass of Venus, a year lasts just over three Earth days. Th...

‘We have changed the view of our galaxy forever.’

Astronomers have published a gigantic infrared map of the Milky Way containing more than 1.5 billion objects ― the most detailed one ever made. Using the European Southern Observatory’s VISTA telescope, the team monitored the central regions of our Galaxy over more than 13 years. At 500 terabytes of...

Betelgeuse has a sequel — in the form of a companion star that's about the same mass as the sun, orbiting it about once every 2,100 days.

In September 2023, the joint Japan Aerospace Exploration Agency (JAXA), European Space Agency (ESA), and…

The jets of material that spew from black holes catalyze stellar eruptions, surprising astronomers and raising questions about the jets' role in the universe.

The universe’s hidden mass may be made of black holes, which could wobble the planets of the solar system when they pass by

Astronomers have spotted the biggest pair of black hole jets ever seen, spanning 23 million light-years in total length. That's equivalent to lining up 140 Milky Way galaxies back to back.

Astronomers have long criticized the satellites for being too bright, making it harder to see the universe.

Astronomers have used the NASA/ESA James Webb Space Telescope to confirm that supermassive black holes can starve their host galaxies of the fuel they need to form new stars. The results are reported in the journal Nature Astronomy.

A pair of asteroid dynamics researchers from Universidad Complutense de Madrid Ciudad Universitaria have found that a small asteroid will make one orbit around the Earth starting this month before departing back into other parts of the solar system.

ESA researchers pioneering re-entry science chase real-world data to the edge of space

New research suggests that volcanoes were still erupting on the moon when dinosaurs roamed Earth. Researchers based their conclusion on an analysis of tiny glass beads brought back from the moon by a Chinese spacecraft.