Reference Terms
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Geomagnetic storm
A geomagnetic storm is a temporary disturbance of the Earth's magnetosphere.
Note: The above text is excerpted from the Wikipedia article "Geomagnetic storm", which has been released under the GNU Free Documentation License.
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Space & Time News
May 20, 2025
May 19, 2025 — The largest sample of galaxy groups ever detected has been presented by a team of international astronomers using data from the James Webb Space telescope (JWST) in an area of the sky called COSMOS ...
May 14, 2025 — Researchers propose a new theory for the origin of dark matter, the invisible substance thought to give the universe its shape and structure. Their mathematical models show that dark matter could ...
May 14, 2025 — A new study achieves unprecedented accuracy in modelling extreme cosmic events like black hole and neutron star collisions by calculating the fifth post-Minkowskian (5PM) order, crucial for interpreting gravitational wave data from current and ...
May 13, 2025 — Astronomers have developed a groundbreaking computer simulation to explore, in unprecedented detail, magnetism and turbulence in the interstellar medium (ISM) -- the vast ocean of gas and charged ...
Latest Headlines
updated 12:56 pm ET
May 20, 2025 — Astronomers have filled a large gap in knowledge about Mars' water cycle. Their research on water percolating from surface to aquifer could change the picture of what early Mars was like, suggesting ...
May 19, 2025 — Astronomers searching for massive black holes shredding stars found one in an unusual place -- 2,600 light years from the core of a galaxy. The roque black hole may be from an earlier merger with ...
May 19, 2025 — Researchers analyzed a global database of 500,000 strange streaks that occur on steep Martian slopes, concluding that they're most likely caused by dry processes rather than liquid ...
May 15, 2025 — The Ultraviolet Spectrograph (UVS) aboard NASA's Europa Clipper spacecraft has successfully completed its initial commissioning following the October 14, 2024, launch. Scheduled to arrive in the ...
May 15, 2025 — Researchers have discovered that Cepheid variable stars in our neighboring galaxy, the Small Magellanic Cloud, are moving in opposing directions along two distinct axes. They found that stars closer ...
May 15, 2025 — Using new observations with the ALMA telescope array in Chile, researchers have compiled the most precise map of three regions in the Milky Way's Central Molecular Zone to date, providing valuable ...
May 14, 2025 — By analyzing how far material ejected from an impact crater flies, scientists can locate buried glaciers and other interesting subsurface ...
May 14, 2025 — Apples-to-apples comparisons in the distant universe are hard to come by. Whether the subject is dwarf galaxies, supermassive black holes, or 'hot Jupiters,' astronomers can spend months or years ...
May 12, 2025 — The universe is decaying much faster than thought. This is shown by calculations of scientists on the so-called Hawking radiation. They calculate that the last stellar remnants take about 10^78 years ...
May 12, 2025 — Massive ripples in the very fabric of space and time wash over Earth constantly, although you'd never notice. An astrophysicist is trying a new search for these gravitational ...