Planets can cause the star to have a very slight wobble or shift in normal path. This is picked up by a spectrogram. Some planetary systems actually have dust clouds around the star.
Scientist know this by the color difference on the planets surface.
They are very useful to scientists because it helps them see stars and planets better
Planets orbit stars.
stars, the planets have to get heat from stars
The geology of the Moon and the rock planets like Mars.
An Astronomer is a scientist who studies the stars and planets.
An Astronomer is a scientist who studies the stars and planets.
An astronomer.
A scientist who studies celestial bodies such as planets, stars , and galaxies.
Orbiting stars. We know of eight planets orbiting our Sun, and we know of over 300 planets orbiting other stars.
living things, man-made objects and stars and planets
No. We know what the stars are. They are not planets. They are distant suns, many of which do have undiscovered planets.
Scientist know this by the color difference on the planets surface.
They found stars in the sky that moved in regular patterns, and that kept coming back
they study the stars, watch them for long periods to discover if they wobble. if they do then they have a gravitational pull on a planet
i don't know! ask a scientist.
Pretty sure it was Ptolemy.