Tag

Cosmic Rays

All articles tagged with #cosmic rays

JWST Detects Rich Organic Chemistry in a Distant Galaxy
astronomy18 days ago

JWST Detects Rich Organic Chemistry in a Distant Galaxy

The James Webb Space Telescope unveils a surprisingly rich set of organic molecules in IRAS 07251–0248, an ultra-luminous infrared galaxy about 10+ billion light-years away. Detected molecules include methane, acetylene, benzene, and the methyl radical, indicating a complex chemical network far exceeding current models and potentially driven by cosmic rays that fragment larger carbon-rich grains into smaller organics. This suggests distant galactic nuclei can be ongoing sources of carbon for prebiotic chemistry, offering new insights into the origins of life and showcasing JWST’s power to study chemical evolution in the early universe.

Earth's Ancient Magnetic Flip Reimagined as Haunting Audio
science1 month ago

Earth's Ancient Magnetic Flip Reimagined as Haunting Audio

Scientists used ESA’s Swarm satellite data to turn the 41,000-year-old Laschamps magnetic reversal into an eerie audio track, illustrating a dramatic field flip when the magnetosphere weakened by roughly 5–25% of its current strength over about 250 years and remained abnormally oriented for around 440 years. The event increased cosmic-ray exposure, leaving isotopic fingerprints like higher beryllium-10 and potentially impacting climate and megafauna; ongoing Swarm measurements aim to better predict future geomagnetic fluctuations.

Scientists Race to Uncover Dark Matter's Hidden Nature
science1 month ago

Scientists Race to Uncover Dark Matter's Hidden Nature

Scientists are exploring the nature of dark matter, which makes up about 85% of the universe's matter, by studying galaxy clusters with NASA's XRISM telescope. They are particularly interested in detecting signals from hypothetical particles called sterile neutrinos, which could decay and produce observable X-ray emissions, potentially revealing the particles that constitute dark matter.

Enhancing Cosmic Ray Shielding for Mars Missions
science2 months ago

Enhancing Cosmic Ray Shielding for Mars Missions

Cosmic rays pose a significant challenge for human space travel beyond Earth, especially to Mars, due to their damaging effects on living organisms and equipment. Current physical shields are insufficient against high-energy cosmic rays, prompting research into biological protection methods such as antioxidants, hibernation-like states, and leveraging organisms like tardigrades. Advances in simulation and accelerator technology, along with increased research investment, are crucial for developing effective protection strategies to enable safe long-duration space missions.

NASA Balloon Finds Unusual Signals in Antarctic Ice
science3 months ago

NASA Balloon Finds Unusual Signals in Antarctic Ice

NASA's ANITA balloon experiment detected mysterious upward-moving radio signals from beneath Antarctica's ice, initially suggesting potential new particles or physics, but further analysis indicates these signals are unlikely to be neutrinos, leaving the anomaly unexplained. Researchers are developing more advanced detectors like PUEO to better understand these phenomena.

Innovative Starships and Missions Paving the Way for Interstellar Travel
science6 months ago

Innovative Starships and Missions Paving the Way for Interstellar Travel

This week in science, a design for a 400-year trip to Alpha Centauri was proposed, AI models were found to transmit potentially malicious secret messages, life may exist on icy worlds beyond traditional habitable zones, ancient cranial modifications in Europe were discovered, and new deep-sea creatures were filmed in extreme ocean depths. Additionally, concerns about reduced funding for mRNA vaccines and other scientific discoveries were highlighted.