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The closest encounter to the Sun so far predicted is the low-mass orange dwarf star Gliese 710 / HIP 89825 with roughly 60% the mass of the Sun. [4] It is currently predicted to pass 0.1696 ± 0.0065 ly (10 635 ± 500 au) from the Sun in 1.290 ± 0.04 million years from the present, close enough to significantly disturb the Solar System's Oort ...
Sirius is the brightest star in the night sky.Its name is derived from the Greek word Σείριος (Latin script: Seirios), meaning lit. 'glowing' or 'scorching'. The star is designated α Canis Majoris, Latinized to Alpha Canis Majoris, and abbreviated α CMa or Alpha CMa.
One study found that a not yet directly-observed, dust-modulating star or white dwarf of 1.17 ± 0.7 M ☉ at a distance of 8.60 ± 0.33 AU would be the most likely solution for Betelgeuse's 2170-day secondary periodicity, fluctuating radial velocity, moderate radius and low variation in effective temperature, as of 2024. [105]
Meteor showers will be few and far between during the first half of 2025, but two will peak in the spring sky. The Lyrids will unfold first on the night of Monday, April 21, into Tuesday, April 22 ...
For more information about Summer Reading Club 2024, go to washcolibrary.org or call the Alice Virginia and David W. Fletcher Branch Library Children’s Department at 301-739-3250 or a branch ...
Just kidding, they’d never ask that…but just in case, here’s a roundup of ideas that will help older kids get through the long, cruel summer with something that spark 64 Summer Activities ...
The physical universe is defined as all of space and time [a] (collectively referred to as spacetime) and their contents. [10] Such contents comprise all of energy in its various forms, including electromagnetic radiation and matter, and therefore planets, moons, stars, galaxies, and the contents of intergalactic space.
Many of the stars are luminous hot blue supergiants, with the stars of the belt and sword forming the Orion OB1 association. Standing out by its red hue, Betelgeuse may nevertheless be a runaway member of the same group. Stars of the constellation by distance (red-green 3D view) and the brightness of each star (star size)