Reference Terms
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Geomagnetic reversal
A geomagnetic reversal is a change in the orientation of Earth's magnetic field such that the positions of magnetic north and magnetic south become interchanged.
Note: The above text is excerpted from the Wikipedia article "Geomagnetic reversal", which has been released under the GNU Free Documentation License.
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Space & Time News
April 28, 2025
Apr. 25, 2025 — Astronomers have discovered that super-Earth exoplanets are more common across the universe than previously thought. While it can be relatively easy to locate worlds that orbit close to their star, planets with wider paths can be difficult to ...
Apr. 17, 2025 — Research from NASA's Curiosity rover has found evidence of a carbon cycle on ancient ...
Apr. 16, 2025 — Astronomers have detected the most promising signs yet of a possible biosignature outside the solar system, although they remain ...
Apr. 16, 2025 — Astronomers have found a planet that orbits at an angle of 90 degrees around a rare pair of peculiar stars. This is the first time we have strong evidence for one of these 'polar planets' orbiting a ...
Latest Headlines
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Apr. 18, 2025 — Researchers use the sophisticated technology on NASA's Perseverance rover to analyze volcanic rocks in Mars' Jezero Crater. Their findings show that some of the same volcanic processes that led to ...
Apr. 24, 2025 — The world's largest solar telescope has reached an important milestone. The data published now were obtained during the technical commissioning of the ...
Apr. 24, 2025 — Carbon-containing meteorites look like they had less severe impacts than those without carbon because the evidence was blasted into space by gases ...
Apr. 24, 2025 — Using the James Webb Space Telescope (JWST), scientists analyzed far-away bodies -- known as Trans-Neptunian Objects (TNOs) -- and found varying ...
Apr. 23, 2025 — Scientists and space explorers have been on the hunt to determine where and how much ice is present on the Moon. Water ice would be an important resource at a future lunar base, as it could be used ...
Apr. 22, 2025 — A planet 140 light-years from Earth is rapidly coming apart due to its close proximity to its star. The roasting planet is effectively evaporating ...
Apr. 21, 2025 — Geologists weigh in on a long-running debate about Mars: Billions of years ago, was the Red Planet warm and wet or cold and ...
Apr. 9, 2025 — Scientists have discovered key conditions needed for a stellar black hole to create plasma jets. Their findings show that when superheated gas material experiences a rapid shrinkage towards the black ...
Apr. 18, 2025 — Researchers have developed a new coronagraph that could make it possible to see distant exoplanets obscured by light from their parent ...
Apr. 18, 2025 — New research finds that despite large rivers and seas of liquid methane, Saturn's moon Titan seems mostly devoid of river deltas, raising new questions about the surface dynamics on this alien ...