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HIP 56948 (also known as HD 101364) is a solar twin star of type G5V. [2] It is one of the most Sun-like stars yet known in terms of size, mass, temperature, and chemical makeup. The Sun is about 4.6 billion years old, and HIP 56948 is believed to be about 7.1 billion years old.
A twin star of the Sun may have formed along with our solar system, a new study from the Center for Astrophysics finds. If confirmed, the presence of a second star would explain mysteries of the ...
Matese, Whitmire and their colleague Patrick Whitman first proposed the existence of this planet in 1999, [9] based on observations of the orbits of long-period comets. Most astronomers agree that long-period comets (those with orbits of thousands to millions of years) have a roughly isotropic distribution; that is, they arrive at random from every point in the sky. [10]
HD 162826 (HR 6669, HIP 87382) [14] is a star in the constellation Hercules.It is about 110 light-years (34 parsecs) away from Earth. [1] With an apparent magnitude of 6.55, [2] the star can be found with binoculars or a low-power telescope by reference to nearby Vega in the constellation Lyra.
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Nemesis is a hypothetical red dwarf [1] or brown dwarf, [2] originally postulated in 1984 [3] to be orbiting the Sun at a distance of about 95,000 AU (1.5 light-years), [2] somewhat beyond the Oort cloud, to explain a perceived cycle of mass extinctions in the geological record, which seem to occur more often at intervals of 26 million years.
The type of magnetic activity on Alpha Centauri A is comparable to that of the Sun, showing coronal variability due to star spots, as modulated by the rotation of the star. However, since 2005 the activity level has fallen into a deep minimum that might be similar to the Sun's historical Maunder Minimum. Alternatively, it may have a very long ...
David Beckham Learns About a Long-Lost Twin Brother in Stella Artois' Super Bowl 2025 Commercial — Get a First Look. Luke Chinman. January 23, 2025 at 9:00 AM. Does David Beckham have a secret ...