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Brian Oldfield (June 1, 1945 – March 26, 2017) [1] was an American athlete and personality of the 1970s and early 1980s. A standout shot putter, Oldfield was credited with making the rotational technique popular.
Distances can be measured within 10% as far as the Galactic Center, about 30,000 light years away. Stars have a velocity relative to the Sun that causes proper motion (transverse across the sky) and radial velocity (motion toward or away from the Sun).
A diagram of a typical nautical sextant, a tool used in celestial navigation to measure the angle between two objects viewed by means of its optical sight. Celestial navigation, also known as astronavigation, is the practice of position fixing using stars and other celestial bodies that enables a navigator to accurately determine their actual current physical position in space or on the ...
The first mass shooting occurred in 1966 when a sniper at the University of Texas killed 17 people from his perch in a clock tower. Since then, as of May 1, 2021, 1,316 people have been the victim ...
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 ...
Isolated, star forming group member 3,000 ly 108 UGC 4879 (VV124) [73] IAm 3.956 ... One of the smallest galaxies with planetary nebulae 6,000 ly 114 Tucana B: dSph
The uncertainty is due to no-one knowing exactly how far away the stars are. If they are exactly the same distance from us then the distance between them is only 17 800 AU (0.281 ly). [7] Between Mizar and Alcor, the 8th-magnitude star Sidus Ludoviciana is a distant background object.
This article documents the most distant astronomical objects discovered and verified so far, and the time periods in which they were so classified. For comparisons with the light travel distance of the astronomical objects listed below, the age of the universe since the Big Bang is currently estimated as 13.787±0.020 Gyr.