2007-12-29 11:03:38 · 9 answers · asked by Zelda Hunter 7 in Science & Mathematics ➔ Astronomy & Space
I read a story from scientific american magazine one time that said yes our star the sun had a sister star many many Millions of years ago and they have since drifted so far apart that the average person would not know about it,, This one would be an interesting subject to research because I remember reading it,,
Found some info on it here; Our suns twin
http://www.space.com/scienceastronomy/071109-sun-twin.html
and the results are here;
http://www.google.com/search?sourceid=navclient&ie=UTF-8&&q=our+suns+twin
2007-12-29 21:27:14 · answer #1 · answered by SPACEGUY 7 · 2⤊ 0⤋
If you mean the same spectral class (G2V) and similar mass, there are several nearby stars that are very similar. Alpha Centauri A is the canonical example. The sun is not an unusual star.
If you mean is the sun part of a double star system, the answer is no. Anything of red dwarf luminosity or brighter (cf. Alpha Centauri C) would have been detected by surveys like Hipparcos.
2007-12-29 11:16:00 · answer #2 · answered by laurahal42 6 · 5⤊ 0⤋
Some researcher years ago claimed to have found statistical evidence that mass extinctions on Earth occurred in a closely defined cycle. He attributed that cycle to the return of a star that could be considered a companion to our sun. Supposedly this star is on a highly ellipitical orbit that brings it back into our neighborhood every 650,000 years or so and as it approaches the solar system its gravity dislodges comets and asteroids from their usual orbits to impact Earth, bringing about the extinctions. So far, no observational evidence has verified or disproved his theory.
2007-12-29 11:11:12 · answer #3 · answered by Anonymous · 2⤊ 0⤋
In our Solar system, no, but within our galaxy, there may be many stars quite similar to our sun. The star HD69830, 41 light years from Earth in the constellation Puppis, appears to be very similar to our sun, as well as the star 18 Scorpii, which is 47.5 light years away.
2007-12-29 11:13:19 · answer #4 · answered by Shaula 7 · 3⤊ 0⤋
Alpha Centauri
2007-12-29 11:08:31 · answer #5 · answered by Anonymous · 2⤊ 3⤋
Possibly in other parts of the universe.
2007-12-29 11:16:55 · answer #6 · answered by The Game 4 · 1⤊ 1⤋
it is thought that our sun was one in a binary pair at one point in history, but their gravity pull weakened, so they drifted apart.
2007-12-29 11:09:19 · answer #7 · answered by ari 3 · 0⤊ 1⤋
We don´t really know.
2007-12-29 13:12:04 · answer #8 · answered by Asker 6 · 1⤊ 0⤋
its the moon duh!! how do you think we get moon light?? its really a star
2007-12-29 12:11:51 · answer #9 · answered by Mercury 2010 7 · 0⤊ 3⤋