Reference Terms
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Rocket engine
A rocket engine is a reaction engine that can be used for spacecraft propulsion as well as terrestrial uses, such as missiles.
Note: The above text is excerpted from the Wikipedia article "Rocket engine", which has been released under the GNU Free Documentation License.
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Space & Time News
November 4, 2024
Oct. 30, 2024 New research in our Milky Way has revealed a neutron star that rotates around its axis at an extremely high speed. It spins 716 times per second, making it one of the fastest-spinning objects ever ...
Oct. 30, 2024 It would take far longer than the lifespan of our universe for a typing monkey to randomly produce Shakespeare, a new study ...
Oct. 17, 2024 Astronomers observed ancient quasars that appear to be surprisingly alone in the early universe. The findings challenge physicists' understanding of how such luminous objects could have formed so early on in the universe, without a significant ...
Oct. 16, 2024 An international team has successfully demonstrated that 70% of all known meteorite falls originate from just three young asteroid families. These families were produced by three recent collisions that occurred in the main asteroid belt 5.8, 7.5, ...
Latest Headlines
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Nov. 4, 2024 A new study details how climate change transforms coastal wetlands in North Carolina from forest to marshland or even open water, and how satellite imagery may help better direct conservation efforts ...
Nov. 4, 2024 Stem cells grown in microgravity aboard the International Space Station (ISS) have unique qualities that could one day help accelerate new biotherapies and heal complex disease, researchers say. The ...
Nov. 4, 2024 The temperature of elementary particles has been observed in the radioactive glow following the collision of two neutron stars and the birth of a black hole. This has, for the first time, made it ...
Nov. 4, 2024 Astronomers have discovered a supermassive black hole at the center of a galaxy just 1.5 billion years after the Big Bang that is consuming matter at a phenomenal rate -- over 40 times the ...
Oct. 30, 2024 More accurate orbit predictions for satellites and space debris as well as a better understanding of the water masses present on Earth: Researchers at achieved both using satellite laser ...
Nov. 1, 2024 Teams of astronomers used the combined power of NASA's Hubble and James Webb space telescopes to revisit the legendary Vega ...
Oct. 31, 2024 For Halloween, the European Southern Observatory (ESO) reveals a spooktacular image of a dark nebula that creates the illusion of a wolf-like silhouette against a colourful cosmic backdrop. Fittingly ...
Oct. 30, 2024 In space exploration, long-distance optical links can now be used to transmit images, films and data from space probes to Earth using light. But in order for the signals to reach all the way and not ...
Oct. 28, 2024 Researchers have strengthened the case that matter becomes dark energy when massive stars collapse and become black ...
Oct. 28, 2024 Researchers have pored over more than two decades' worth of data from NASA's Chandra X-Ray Observatory to show there's new knotty science to discover around black ...