Universe Today

Astronomers using ALMA have detected the earliest hot galaxy cluster atmosphere ever observed, revealing a massive reservoir of superheated gas in the infant cluster SPT2349-56 just 1.4 billion years after the Big Bang. The gas is far hotter and more pressurised than current theories predicted for such a young system, forcing scientists to completely rethink how galaxy clusters evolved in the early universe. This discovery suggests that violent processes like supermassive black hole outbursts and intense starbursts heated these cluster atmospheres much earlier and more efficiently than anyone expected, fundamentally challenging our understanding of how the universe’s largest structures formed.

Astronomers using the James Webb Space Telescope and ALMA have discovered one of the oldest ‘dead’ galaxies in the universe, revealing that supermassive black holes can kill galaxies through slow starvation rather than violent destruction. The galaxy, nicknamed ‘Pablo’s Galaxy’, formed most of its 200 billion solar masses of stars between 12.5 and 11.5 billion years ago before abruptly stopping, not because its black hole blew away all the gas in one catastrophic event, but because it repeatedly heated incoming material over multiple cycles, preventing fresh fuel from ever replenishing the galaxy’s star forming reserves.

NASA’s Hubble Space Telescope has captured stunning new image of HH 80/81, a pair of objects created when supersonic jets from a newborn star slam into previously expelled gas clouds, heating them to extreme levels. These jets, powered by a protostar 20 times more massive than our Sun, stretch over 32 light years through space and travel at speeds exceeding 1,000 kilometres per second, making them the fastest outflows ever recorded from a young star.

A disparate collection of young stellar objects bejewels a cosmic panorama in the star-forming region NGC 1333 in this new image from NASA’s Hubble Space Telescope. To the left, an actively forming star called a protostar casts its glow on the surrounding gas and dust, creating a reflection nebula. Two dark stripes on opposite sides […]

Betelgeuse is the star that everybody can't wait to see blow up, preferably sooner than later. That's because it's a red supergiant on the verge of becoming a supernova and there hasn't been one explode this close in recorded human history. It's been changing its brightness and showing strange surface behavior, which is why astronomers track its activity closely. Are these changes due to its aging process? Do they mean it's about to blow up? Probably not.

Mars Was Half Covered by an Ocean susannakohler33808 Mon, 01/12/2026 - 12:00 Mars Was Half Covered by an Ocean https://mediarelations.unibe.ch/media_releases/2026/media_releases_2026/mars_was_half_covered_by_an_ocean/index_eng.html

New Space is a term now commonly used around the rocketry and satellite industries to indicate a new, speed focused model of development that takes its cue from the Silicon Valley mindset of “move fast and (hopefully don’t) break things.” Given that several of the founders of rocketry and satellite companies have a Silicon Valley background, that probably shouldn’t be a surprise, but the mindset has resulted in an exponential growth in the number of satellites in orbit, and also an exponential decrease in the cost of getting them to orbit. A new paper, recently published in pre-print form in arXiv from researchers at Schmidt Sciences and a variety of research institutes, lays out plans for the Lazuli Space Observatory, which hopes to apply that same mindset to flagship-level space observatory missions.

Mars Express has captured stunning images of wind sculpted terrain near the planet’s equator, revealing how Martian winds act as a sandblaster across geological timescales. The spacecraft’s high resolution camera spotted amazing ridges called yardangs, features carved by sand carrying winds that extend tens of kilometres across the surface. These dramatic erosional features share the landscape with impact craters and ancient lava flows, creating a fusion of three different geological forces that together tell the story of Mars’s violent and dynamic past.

Astronomers have revealed a surprising diversity in the evolutionary paths of the universe’s most massive galaxies. Using multi-wavelength observations combining Keck Observatory spectroscopy with far infrared and radio data, researchers found that less than two billion years after the Big Bang, some ultramassive galaxies had already shut down star formation and shed their dust, while others continued building stars behind thick dusty veils.

Astronomers have discovered a crucial missing link in understanding how the Galaxy’s most common planets form. By studying four young, extraordinarily puffy planets orbiting a 20 million year old star, researchers have captured a rare snapshot of worlds actively transforming into super Earths and sub Neptunes. This discovery reveals that the universe’s most successful planets start as bloated giants before shrinking dramatically over billions of years, fundamentally changing our understanding of how planetary systems evolve.

Like I said at the beginning, I’m not really keen on the idea of the mathematical universe. My own personal biggest objection stems from the whole point of occam’s razor: make things as simple as possible.

Astronomers using W. M. Keck Observatory on Maunakea, Hawaiʻi Island have uncovered the largest and most extended stream of super-heated gas ever observed flowing from a nearby galaxy, providing the clearest evidence yet that a supermassive black hole can dramatically reshape its host galaxy far beyond its core.

The oceans' check engine light is on and is starting to flash violently. For the eighth year in a row, the world’s oceans absorbed a record-breaking amount of heat in 2025. That means more powerful storms for us, and changing ocean chemistry that could spell the end for some living things.

Supernovae play a crucial role in the formation and evolution of new stars. But where they occur is nearly as important as when. A new study looks at where supernovae will occur in the Triangulum Galaxy, which will help astronomers understand the role of supernovae in more detail.

Gas and dust flowing from stars can, under the right conditions, clash with a star's surroundings and create a shock wave. Now, astronomers using the European Southern Observatory's Very Large Telescope (ESO's VLT) have imaged a beautiful shock wave around a dead star—a discovery that has left them puzzled. According to all known mechanisms, the small, dead star RXJ0528+2838 should not have such a structure around it. This discovery, as enigmatic as it's stunning, challenges our understanding of how dead stars interact with their surroundings.

A distant black hole shredded a companion star that got too close. The star was torn to pieces and the explosion was an extremely powerful event, more energetic than a supernova. At its peak, the energy released was 400 billion times brighter than the Sun.

The Vera C. Rubin Observatory has discovered the fastest-spinning asteroid ever over 500 meters in size.

Combining data from different telescopes is one of the best ways to get a fuller picture of far-off objects. Because telescopes such as Hubble (visible light), the James Webb Space Telescope (infrared), and the Atacama Large Millimeter Array (radio) each collect data in different wavelengths, they are able to capture distinct features of objects like galaxies that other telescopes cannot observe. A new paper by a large group of authors, headed by Andreas Faisst of Caltech, presented at the American Astronomical Society Meeting last week and published in The Astrophysical Journal Supplement tracks eighteen early galaxies in as broad of a spectrum as those instruments can collect, and most significantly found that they seem to “grow up” faster than expected.

Beginning in the 1980’s, another physicist, Roger Penrose, came up with what he called the Triangle of Reality, which sounds like the nerdiest cult in history (and when later I get to talk about the Pythagoreans you’ll see that I’m right).

NASA has announced that it and SpaceX will return the Crew-11 mission team to Earth from the ISS (due to medical concerns with a crew member) no earlier than 5 p.m. EST (2 p.m. PST) on Wednesday, Jan. 14th.