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Astronomers catch massive galaxy assembling piece by piece 1.2 billion years after Big Bang

Astronomers have discovered a remarkably tiny group of six young galaxies just 1.2 billion years after the Big Bang. This may be a rare glimpse of how some of the universe’s largest galaxies formed. The paper outlining the findings was submitted to the arXiv preprint server on July 13.

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Should scientists have research ‘reserves’ on the moon?

The worlds of the solar system are exciting and, so far, mostly pristine places for planetary scientists to study. As space missions continue to travel to Mars, Europa, asteroids and other worlds, questions arise about keeping them safe for continued exploration and observation.

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Young rift flanks suggest Venus remains tectonically active

Venus is an inhospitable place, with temperatures soaring to several hundred degrees Celsius (hundreds of degrees Fahrenheit) and no oceans like those on Earth. Planetary scientists long believed Venus was geologically dormant. However, recent research indicates that Venus remains geologically “alive” and even hosts active volcanoes.

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Could alien signals be hiding on a different radio channel?

Astronomers searching for signs of extraterrestrial intelligence may have been missing alien signals in part of the radio spectrum that has not recently been explored.

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Mars auroras reveal miniature version of Earth’s magnetic engine

NASA MAVEN (Mars Atmosphere and Volatile Evolution) mission scientists have uncovered a key puzzle piece in understanding certain types of auroras on Mars, finding that they form in a similar way to Earth–based auroras.

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NASA’s new space telescope will tackle some of the universe’s biggest mysteries

NASA is about to launch a space observatory that could help settle some of the biggest mysteries in modern astronomy. The Nancy Grace Roman Space Telescope will study how the universe began, what it is made of and how it has evolved over time.

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Hawai’i serves as model for Western researchers studying the moon’s volcanic history

The moon is 384,000 kilometers (239,000 miles) away from Earth, but one of the best places to study its surface is much closer to home. Western planetary scientist Catherine Neish and PhD candidate Sashank Vanga traveled to Hawai’i Volcanoes National Park in June to investigate lava flows that could reveal new clues about the moon’s […]

Most powerful Northern Lights in a generation expose weaknesses in UK infrastructure

Millions of people across the UK marveled at the spectacular northern lights that lit up the night sky in May 2024. But while the display captivated skywatchers, the geomagnetic storm behind it also served as the biggest test in a generation of the UK’s preparedness for severe space weather. So did it pass?

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JWST captures rare glimpse of early black hole growing inside network of young galaxies

Astronomers using the James Webb Space Telescope have captured one of the clearest views yet of how an early supermassive black hole may grow within a network of young galaxies. The compact active galaxy, seen just a billion years after the Big Bang, lies beside a 12,000-parsec-long filament containing multiple galaxies that are expected to […]

Rescuing satellites is harder than it looks. A growing space junk problem will make doing so more important

A commercial robotic spacecraft called LINK launched on an emergency mission to save NASA’s Neil Gehrels Swift Observatory, which has been slowly falling toward Earth, on July 3, 2026. Over the coming weeks, LINK, built by Katalyst Space Technologies, will try to grasp the telescope, then spend months raising it to a safer orbit.

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Juno takes temperature of Jupiter’s fiery moon Io

NASA’s Juno mission has provided the first measurements of the temperature below the surface of Jupiter’s moon Io, revealing significant heating within the shallow subsurface of the most volcanically active world in the solar system. Collected during two close flybys, the data also show that most of Io’s surface is remarkably smooth and composed of […]

Astronomers are still trying to understand how a galaxy’s spiral arms form

The Whirlpool galaxy (M51) is a classic grand spiral galaxy. It was the first object identified as a spiral, way back in 1845. At the time, it and other galaxies were considered spiral nebulae, since astronomers didn’t know other galaxies existed. Edwin Hubble finally proved that there were other galaxies in the early 1920s.

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Jupiter-mass ‘exomoon’ orbiting brown dwarf challenges cosmic labels

Observations made with the European Southern Observatory’s Very Large Telescope (ESO’s VLT) have revealed evidence for a moon-like object in the CD-35 2722 system. Unlike moons in our solar system, the newly found object does not orbit a planet, raising questions about what to name it. Instead, it circles a brown dwarf, an object larger […]

Scientists turn radio telescopes into space scanners—sharpening view of hidden orbital threats

Scientists have successfully demonstrated a breakthrough in how sensitive radio telescopes can be used to significantly improve the world’s ability to detect, track and characterize satellites and space debris in orbit.

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Private mission launches to extend life of out-of-gas communication satellites

A two-armed space robot blasted off on a private salvage operation Tuesday to slap life-extending jetpacks on old satellites running low on fuel thousands of miles up.

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