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Unique shape of star’s explosion revealed just a day after detection

Swift observations with the European Southern Observatory’s Very Large Telescope (ESO’s VLT) have revealed the explosive death of a star just as the blast was breaking through the star’s surface. For the first time, astronomers unveiled the shape of the explosion at its earliest, fleeting stage.

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Solar storms bring colorful northern lights to unexpected places

Solar storms brought colorful auroras to unexpected places on Tuesday night, and there could be more to come.

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Evidence of ancient underground water reveals Mars may have stayed habitable longer than believed

Scientists from New York University Abu Dhabi (NYUAD) have uncovered new evidence that water once flowed beneath the surface of Mars, revealing that the planet may have remained habitable for life much longer than previously thought.

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High-resolution solar data reveal chromospheric jets’ characteristics in active region

A research team from the Yunnan Observatories of the Chinese Academy of Sciences (CAS) has detailed the physical characteristics of chromospheric jets in and around a sunspot, using high-resolution observations from the New Vacuum Solar Telescope (NVST). Their findings were published in The Astrophysical Journal.

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What a missing signal tells us about alien worlds

When the James Webb Space Telescope detected potential biosignatures in the atmosphere of K2-18 b last year, the discovery sparked intense debate. Here was a sub-Neptune exoplanet 124 light years away, possibly harboring methane, carbon dioxide, and even dimethyl sulfide, which is a gas produced by phytoplankton on Earth. But before we get too excited […]

First confirmed coronal mass ejection spotted on a star beyond the sun

Astronomers using the European Space Agency’s XMM-Newton space observatory and the LOFAR telescope have definitively spotted an explosive burst of material thrown out into space by another star—a burst powerful enough to strip away the atmosphere of any unlucky planet in its path.

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The path to Mars: Small, unsexy problems

This article is a speculative piece based on the European Space Agency (ESA) Strategy 2040 plan for the future of space exploration. Dr. Orson Sutherland, a program manager responsible for Mars exploration at ESA, shared his expertise and work on multiple ongoing projects.

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Scientists discover caves carved by water on Mars that may have once harbored life

If there is, or ever has been, life on Mars, the chances are it would exist in caves protected from the severe dust storms, extreme temperatures, and high radiation present on its surface. One place to focus our attention could be eight possible cave sites (called skylights) recently discovered by Chenyu Ding at Shenzhen University […]

Cosmic dust bunnies: Why the universe might be fluffier than we thought

Space dust provides more than just awe-inspiring pictures like the Pillars of Creation. It can provide the necessary materials to build everything from planets to asteroids. But what it actually looks like, especially in terms of its “porosity” (i.e., how many holes it has) has been an area of debate for astrochemists for decades. A […]

Habitable zone planets around red dwarfs aren’t likely to host exomoons, simulations suggest

There are no confirmed exomoons, moons orbiting distant exoplanets in other solar systems. There are a few candidates, but none have passed the threshold and been accepted as confirmed. But they must exist. Moons are common in our solar system, so it would be extremely weird if they didn’t exist elsewhere.

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China’s Tianwen-1 orbiter spots 3I/ATLAS

The interstellar object known as 3I/ATLAS just flew past Mars, and China’s Tianwen-1 mission managed to snap some pics with its high-resolution camera. According to the China National Space Agency (CNSA), the orbiter’s high-resolution camera captured images of the comet from a distance of about 30 million km (18.6 million mi). This makes the Tianwen-1 […]

Within a second after the Big Bang, particle interactions may have created black holes, boson stars and cannibal stars

Before atomic elements came together, less than a second after the Big Bang, if particles condensed into halos of matter, these halos may then have collapsed, creating the first black holes, boson stars, and so-called cannibal stars. This is the conclusion of a new study just published in Physical Review D, conducted by a team […]

South Africa’s flagship telescope at 20: An eye on the sky and on the community

The Southern African Large Telescope (SALT) celebrates 20 years of observing the sky. SALT is the largest optical telescope in the southern hemisphere. It’s been steadily revealing new science knowledge, ranging from the discovery of planets outside our solar system to understanding the unusual physics around black holes. It’s also 20 years of doing science […]

The archaeologist’s guide to colonizing other worlds

Models help scientists understand everything from the particles that make up the universe to massive superstructures of galaxies at the beginning of time. But sometimes they model more mundane, though perhaps even more complex, features—including the course of human civilization. A new paper by Thomas Leppard of the International Archaeological Research Institute and his co-authors, […]

How a medieval Oxford friar used light and color to find out what stars and planets are made of

During the 1240s, Richard Fishacre, a Dominican friar at Oxford University, used his knowledge of light and color to show that the stars and planets are made of the same elements found here on Earth. In so doing, he challenged the scientific orthodoxy of his day and preempted the methods and discoveries of the 21st-century […]