Pre-1945 steel can help suppress background radiation in rare-event detectors, but modern ultra-low-background metals and ...
Cosmic rays are high-energy particles that constantly bombard Earth from space and are influenced by the sun's magnetic activity. When the sun is active, fewer of these particles reach Earth; when the ...
Earth’s atmosphere and magnetic field shelter humans from cosmic radiation, but deep-space crews bound for the Moon or Mars ...
The night sky deceives us. The universe should be ablaze with starlight, yet it isn’t. Discover how the finite speed of light, cosmic expansion, and invisible radiation from the Big Bang—the Cosmic ...
Cosmic rays are high-energy particles, chiefly protons and atomic nuclei, that pervade space and strike the Earth’s atmosphere. Detection techniques encompass ground-based air-shower arrays, ...
Cosmic voids may seem like the emptiest places in the universe, stripped of matter, radiation, and even dark matter. But they’re far from nothing. Even in these vast empty regions, the fundamental ...
More than 600 feet below the surface of Antarctica, ultrasensitive detectors picked up the tracks of cosmic rays crashing down from outer space. The Askaryan Radio Array is a group of sensors drilled ...
Natural background radiation coming from cosmic rays, the earth's crust, and food can vary from place to place. Altitude is one factor that plays a role in radiation levels, as does geology. The graph ...
The first step on the Moon was one of humanity’s most exciting accomplishments. Now scientists are planning return trips – and dreaming of Mars beyond. Next year, Nasa’s Artemis II mission will send ...
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