Reference Terms
from Wikipedia, the free encyclopedia
Gravitational wave
In physics, in terms of a metric theory of gravitation, a gravitational wave is a fluctuation in the curvature of space-time which propagates as a wave, traveling outward from a moving object or system of objects.
Note: The above text is excerpted from the Wikipedia article "Gravitational wave", which has been released under the GNU Free Documentation License.
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February 25, 2025
Feb. 25, 2025 — A new study shows a water-rich mineral could explain the planet's color -- and hint at its wetter, more habitable ...
Feb. 24, 2025 — Mars may have once been home to sun-soaked, sandy beaches with gentle, lapping waves according to a new ...
'Out of Science Fiction': First 3D Observations of an Exoplanet's Atmosphere Reveal a Unique Climate
Feb. 18, 2025 — Astronomers have peered through the atmosphere of a planet beyond the Solar System, mapping its 3D structure for the first time. By combining all four telescope units of the European Southern ...
Feb. 13, 2025 — What if time is not as fixed as we thought? Imagine that instead of flowing in one direction -- from past to future -- time could flow forward or backward due to processes taking place at the quantum ...
Latest Headlines
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Feb. 25, 2025 — New observations of 2024 YR4 conducted with the European Southern Observatory's Very Large Telescope (ESO's VLT) and facilities around the world have all but ruled out an impact of the asteroid with ...
Feb. 25, 2025 — Using the James Webb Space Telescope, astronomers investigate the extreme weather patterns and atmospheric properties of exoplanet LTT 9779 b. New JWST observations with NIRISS reveal a dynamic ...
Feb. 25, 2025 — Astronomers have discovered that the Solar System traversed the Orion star-forming complex, a component of the Radcliffe Wave galactic structure, approximately 14 million years ago. This journey ...
Feb. 20, 2025 — An international research collaboration has overturned the long-standing belief that the atomic nucleus of lead-208 is perfectly spherical. The ...
Feb. 20, 2025 — Researchers have found that stars in the early universe may have formed from 'fluffy' molecular clouds. Using the ALMA telescope to observe the Small Magellanic Cloud -- whose environment is similar ...
Feb. 19, 2025 — Within the Dark Energy Spectroscopic Instrument's early data, scientists have uncovered the largest samples ever of intermediate-mass black holes and ...
Feb. 18, 2025 — Astrophysicists have observed our central supermassive black hole. They found the accretion disk is constantly emitting flares without periods of ...
Feb. 18, 2025 — Lobster-eye satellite Einstein Probe captured the X-ray flash from a very elusive celestial pair. The discovery opens a new way to explore how massive stars interact and evolve, confirming the unique ...
Feb. 14, 2025 — Researchers demonstrated the first fully 3D-printed, droplet-emitting electrospray engine. The low-cost device can be fabricated more quickly than traditional thrusters, potentially from on board a ...
Feb. 14, 2025 — Asteroids that orbit close to the Earth inevitably cause us some anxiety due to the even remote possibility of a collision. But their proximity also ...