Reference Terms
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Spacetime
In physics, spacetime is a model that combines 3-D space and 1-D time into a single construct called the space-time continuum (the 4th dimension).
Note: The above text is excerpted from the Wikipedia article "Spacetime", which has been released under the GNU Free Documentation License.
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Space & Time News
May 30, 2024
May 23, 2024 Researchers have now seen the formation of three of the earliest galaxies in the universe, more than 13 billion years ago. The sensational discovery contributes important knowledge about the ...
May 23, 2024 The first scientific pictures from the Euclid satellite mission have revealed more than 1,500 billion orphan stars scattered throughout the Perseus cluster of ...
May 23, 2024 While thousands of planets have been discovered around other stars, relatively little is known about them. A NASA catalog featuring 126 exotic, newly discovered worlds includes detailed measurements that allow for comparisons with our own solar ...
May 23, 2024 Astronomers have made the rare and tantalizing discovery of an Earth-like exoplanet 40 light-years away that may be just a little warmer than our own world. The potentially-habitable planet, named Gliese 12 b, orbits its host star every 12.8 days, ...
Latest Headlines
updated 12:56 pm ET
May 30, 2024 New research demonstrated a possible formation mechanism of intermediate-mass black holes in globular clusters, star clusters that could contain tens ...
May 30, 2024 Over the last two years, scientists have used NASA's James Webb Space Telescope to explore what astronomers refer to as Cosmic Dawn -- the period in the first few hundred million years after the big ...
May 29, 2024 Researchers have applied the well-understood and highly verified quantum field theory, usually applied to the study of the very small, to a new target, the early universe. Their exploration led to ...
May 29, 2024 The moon orbiting the asteroid Dinkinesh is actually two tiny moons stuck together. Collectively called 'Selam,' the two moonlets bring new insight into the complex processes behind planetary ...
May 29, 2024 A new study may help redefine how scientists map the surface of the Moon, making the process more streamlined and precise than ever ...
May 28, 2024 Scientists have come a step closer to identifying the mysterious origins of the 'slow' solar wind, using data collected during the Solar Orbiter spacecraft's first close journey to the ...
May 23, 2024 Astronomers have discovered a planet between the sizes of Earth and Venus only 40 light-years ...
May 22, 2024 Surprise findings suggest sunspots and solar flares could be generated by a magnetic field within the Sun's outermost layers. If confirmed, the findings could help scientists better predict space ...
May 22, 2024 Astronomers have a new way to measure how fast a black hole spins, by using the wobbly aftermath from its stellar feasting. The results offer a new ...
May 21, 2024 Researchers have for the first time been able to pin down a prehistoric settlement of early farmers in northern Greece dating back more than 7,000 years to the year. For this they combined annual ...