Astronomy

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

Some of climate change's sharpest realities are being felt on small island nations, where extreme weather is claiming homes and triggering displacement. Those able to stay are spearheading inventive adaptation techniques in a bid to secure their future

Some of climate change's sharpest realities are being felt on small island nations, where extreme weather is claiming homes and triggering displacement. Those able to stay are spearheading inventive adaptation techniques in a bid to secure their future

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 Space 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.

A study of the hearts of Greenland sharks has found that the long-lived deep-sea predator has massive accumulations of ageing markers, such as severe scarring, but this doesn't appear to affect their health or longevity

A study of the hearts of Greenland sharks has found that the long-lived deep-sea predator has massive accumulations of ageing markers, such as severe scarring, but this doesn't appear to affect their health or longevity

In new observations, astronomers detect a moving wake of gas in the outer layers of the red supergiant Betelgeuse, offering fresh evidence for a long-suspected secondary star.

The post Betelgeuse’s Elusive Companion Might Be Making Waves appeared first on Sky & Telescope.

Cancer survival rates climbed significantly in recent decades. But federal funding cuts could threaten that progress, physicians warn

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.

Traditional solar fails in the windswept north. Two Swedish inventors are betting on aerodynamic resilience to solve the latitude gap

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.

This floating ring is the size of a galaxy.

Jupiter with the Great Red Spot

Both Moon and Sun create beautiful

Similar in size to large, bright spiral galaxies in our neighborhood,

Its popular nickname is the Spaghetti Nebula.

How complex is Jupiter?

What's happening to this meteor?

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.