Ancient salt crystals from Ontario were a sample of Earth's atmosphere from a time before animals
Sandeep K S
Dec 25, 2025
1 min read
Exploring Earth's Deep Past: Ancient air and brine in 1.4-billion-year-old halite reveal unexpectedly high oxygen levels and carbon dioxide concentrations, reshaping our understanding of early Earth's atmosphere and climate.
Just a few days in simulated microgravity can subtly change the way women's blood clots, sparking bigger questions about health monitoring protocols for astronauts who spend six months or more in orbit.
First reported in 2020, an International Space Station (ISS) mission detected an unexpected blood clot in a female astronaut's jugular vein.
For the first time, scientists have successfully measured magnetohydrodynamic (MHD) turbulence on scales below one parsec within the gamma-ray halo surrounding the Geminga pulsar wind nebula.
Published in Science Advances, this groundbreaking observation extends to the highest energies—above 100 tera-electron volts (TeV)—providing entirely new insights into the behavior of cosmic rays and magnetic fields within the Milky Way.
It is one of the most famous questions in science, asked over lunch by physicist Enrico Fermi. With hundreds of billions of stars and billions of years, life should have emerged many times over. And yet, no signals. No visitors. No evidence of anyone at all.
The universe is 13 billion years old. Our galaxy alone contains hundreds of billions of stars, a significant proportion of which host planets. Many of those planets sit in the right temperature range for liquid water.
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