Growing Future Meals in Space Will Require Human Waste

By Carolyn Collins Petersen - February 28, 2026 08:09 PM UTC | Space Exploration
Future farmers on the Moon and Mars will have a big challenge: how to grow healthy food in two extremely unhealthy environments. That's because the soil on both worlds isn't at all hospitable to plants and animals. Neither are other conditions. Both are irradiated worlds, Mars has a thin atmosphere and the Moon has none at all. So, how will future colonists on either world grow their food?
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The Universe's Most Extraordinary Construction Site

By Mark Thompson - February 28, 2026 08:39 AM UTC | Cosmology
Astronomers have discovered a extraordinary celestial construction site hiding behind a natural magnifying glass in space and what they've found is unlike anything seen before. A cluster of at least 11 galaxies, all building stars at a ferocious rate in the early universe, has been caught in the act of becoming one of the most massive structures in the universe.
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The Stars That Lit Up the Early Milky Way

By Mark Thompson - February 28, 2026 08:04 AM UTC | Extragalactic
Astronomers have used a special class of ancient, pulsating stars as celestial lighthouses to map the earliest chapter of our Galaxy's life and what they've found is rewriting what we thought we knew about how the Milky Way was born. By building the largest ever catalogue of these stellar beacons and tracing their movements back billions of years, the team has uncovered surprising similarities between our Galaxy's earliest structures, and even found evidence of the same story playing out in our nearest galactic neighbour.
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Would Earth Still Be Habitable Without Us?

By Mark Thompson - February 28, 2026 07:35 AM UTC | Astrobiology
Scientists have built a working model of Earth without any life on it and what they found might change how we search for aliens. By simulating 4.5 billion years of our planet's evolution minus every bacterium, plant, and creature that ever existed, they've created a new tool for spotting genuinely habitable worlds among the thousands of rocky planets soon to be studied by the next generation of space telescopes.
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Jupiter Is Smaller and Flatter Than Previously Thought

By Laurence Tognetti, MSc - February 28, 2026 03:29 AM UTC | Planetary Science
Jupiter is the largest planet in the solar system and has proudly boasted about this since time immemorial, with its scientific confirmation occurring by Galileo Galilei in 1610. It was later found that Jupiter has a bulging equator caused by its rapid rotation, turbulent atmosphere, and complex interior mechanisms despite its massive size, and scientists have even measured its “waistline” down to a tenth of a kilometer. Now, imagine being the largest planet in the solar system and you’re told you’re not as big as you thought. Where probably most humans would be thrilled to find this out, how do you respond if you’re Jupiter?
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JWST Digs Into the Uranian Ionosphere

By Carolyn Collins Petersen - February 27, 2026 05:08 PM UTC | Planetary Science
Uranus is a planet that seems to roll around on its side as it orbits the Sun. That's because it's tipped over, with an axial tilt of 97.8 degrees. That weird tilt gave the James Webb Space Telescope (JWST) a chance to probe the ionosphere using the Near Infrared Spectrometer (NIRSpec) instrument. An international team of astronomers used the data to map the vertical structure of that region and detect faint auroral displays.
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The Cosmic Brain As Seen By The JWST

By Evan Gough - February 26, 2026 04:23 PM UTC | Stars
A dying star has ejected its outer layer and illuminated it with its powerful radiation. The resulting nebula looks every bit like a transparent human skull. Astronomers are calling the unusual structure the Exposed Cranium Nebula.
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Into Totality: Our Complete Guide to the March 3rd Total Lunar Eclipse

By David Dickinson - February 26, 2026 04:05 PM UTC | Observing
If skies are clear, don’t miss one of the top astronomical events of the year this coming Tuesday, March 3rd, as the Moon passes through the Earth’s shadow in a total lunar eclipse. This will be a fine leisurely affair centered around the Pacific Ocean region, with totality lasting almost an hour in duration. For many observers worldwide, this is the last total lunar eclipse until late 2028 and mid-2029.
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How giant galaxies could form just 1.4 billion years after the Big Bang

By Matthew Williams - February 25, 2026 10:17 PM UTC | Cosmology
The existence of massive, elliptical galaxies in the early universe has puzzled astronomers for two decades. An international team led by Nikolaus Sulzenauer and Axel Weiß from the Max Planck Institute for Radio Astronomy (MPIfR) used data from the Atacama Large Millimeter/submillimeter Array (ALMA) to shed light on this open question of galaxy formation. They studied one of the most spectacular galaxy aggregations in great detail and published their results in the current issue of The Astrophysical Journal.
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Curiosity Take Its Closest Look Yet At Martian Spiderwebs

By Evan Gough - February 25, 2026 08:46 PM UTC | Missions
When MSL Curiosity was sent to Gale Crater, one of its goals was to study boxwork ridge features on Mt. Sharp. The rover has gathered its fourth sample from the rocks, and results are on their way. Previous samples showed tantalizing evidence in favour of ancient life on Mars. But we're still waiting for the extraordinary evidence required to conclude that Mars was once inhabited.
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What Causes Those Snowmen in Space?

By Matthew Williams - February 25, 2026 07:00 PM UTC | Space Exploration
Astronomers have long debated why so many icy objects in the outer solar system look like snowmen. Michigan State University researchers now have evidence of the surprisingly simple process that could be responsible for their creation. Jackson Barnes, an MSU graduate student, has created the first simulation that reproduces the two-lobed shape naturally with gravitational collapse. His work is published in the Monthly Notices of the Royal Astronomical Society.
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Why Mars Astronauts Need More Than Just Space Greenhouses

By Andy Tomaswick - February 25, 2026 03:37 PM UTC | Space Exploration
Thinking about food systems in deep space likely brings to mind something like the Martian where an astronaut is scratching barely enough food to survive out of potatoes grown in Martian regolith. Or perhaps a fancy hydroponic system on an interplanetary transport ship, with artificial lighting and all the associated technological wizardry. But a new paper published in Acta Astronautica by Tor Blomqvist and Ralph Fritsche points out that growing food is only one small part of the whole cycle of providing sustenance for astronauts in space. To really get a sense of how difficult it will be, we have to look at the whole picture.
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Comet Wierzchos Vaults Into the March Evening Sky

By David Dickinson - February 25, 2026 03:26 PM UTC | Observing
It seems that the southern hemisphere gets all the good comets. A bashful binocular comet is about to finally leave its southern perch, and briefly come into view for folks up north. Said comet of the moment is C/2023 E1 Wierzchos. Although the comet just passed perihelion last week, it should put on a fine encore show as it heads north in March at dusk.
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How Long Could Earth Microbes Live on Mars?

By Laurence Tognetti, MSc - February 25, 2026 04:26 AM UTC | Planetary Science
Searching for past or present life on Mars is the sole driving force behind every mission we send to the Red Planet, from orbiters to landers to rovers. However, there remains a concern in the scientific community of Earth-based microbes hitching a ride on Mars-bound spacecraft, also called forward contamination. The concern is potentially mistaking Earth microbes for Mars life or Earth microbes potentially influence samples of Mars life we might find. While NASA is dedicated to mitigating it as much as possible, could new methods help determine how long Earth-based microbes could survive on Mars, this alleviating concerns for forward contamination?
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