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Earth isn't a star and doesn't (can't) have a parallax, becuse we use Earth's orbit as a baseline to measure parallax.
vega its like a triangle the farther away one part is(arcturis) the narower the triangle is (paralax)
No, Arcturus is a star.
Arcturus is hot. Bear in mind that only a hot star is even going to be seen in the night sky. Any cold star would also be dark.
Star Arcturus has a temperature of around 3,700 to 5,200 Kelvin.
Earth isn't a star and doesn't (can't) have a parallax, becuse we use Earth's orbit as a baseline to measure parallax.
vega its like a triangle the farther away one part is(arcturis) the narower the triangle is (paralax)
The closer the star, the greater the parallax angle, which is why you can't measure the distance to very distant stars using the parallax method.
Sirius will have a greater angle, because it is closer to us.
Arcturus is in class A.
No, Arcturus is a star.
It means that the distance is greater than a certain amount - depending on how precisely you can measure the parallax.
Arcturus is hot. Bear in mind that only a hot star is even going to be seen in the night sky. Any cold star would also be dark.
Star Arcturus has a temperature of around 3,700 to 5,200 Kelvin.
No. Arcturus is believed to be a single star.
No, Arcturus is a red giant star, not a nebula.
Arcturus is the Zenith Star of the Hawaiian Islands