Detection of reflected light by the planet
Measurement of the wobble of the star, caused by the orbital motion of the planet, detected either by accurate positional measurement of the star or by spectral shift in the Star spectrum
We do not know. Although we have detected planets in other solar systems, we do not know what colors they are.
Other stars, other than our own, have had multiple planets detected in an orbit around them. Its highly likely that there are other systems with eight planets. Planets the size of mercury or even slightly bigger planets the size of the Earth are extremely difficult to detect, so a star with four or five large known planets may actually have a lot more planets.
All the planets in OUR solar system orbit around the sun(which is a star). Planets in other solar systems orbit around other stars.
because of the gravity of the other planets around them
We believe that most stars have planets. The first star PROVABLY detected to have a planet was Gamma Cephei.
By changes in the stars' brightness, and slight variations in their predicted location.
Hundreds of extra-Solar planets have been detected already.
No. I don't believe any planets have been detected outside of our Galaxy. Within our Galaxy, planets are detected by inference not visual techniques. See link for lists of known extrasolar planets
Measurement of the wobble of the star, caused by the orbital motion of the planet, detected either by accurate positional measurement of the star or by spectral shift in the Star spectrum
We do not know. Although we have detected planets in other solar systems, we do not know what colors they are.
Other stars, other than our own, have had multiple planets detected in an orbit around them. Its highly likely that there are other systems with eight planets. Planets the size of mercury or even slightly bigger planets the size of the Earth are extremely difficult to detect, so a star with four or five large known planets may actually have a lot more planets.
No, but some telescopes have detected larger planets orbiting other suns. There are larger planets than Jupiter for they are called Super Jupiters
Yes. Lightning has been detected in the atmospheres of Venus, Jupiter, and Saturn.
All the planets in OUR solar system orbit around the sun(which is a star). Planets in other solar systems orbit around other stars.
yes, the earth and other planets revolve around the sun
Our nine planets orbit around the Sun. Other planets that are light-years away orbit around their suns (A sun is just a large star with planets). Hope this helped!