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What characteristics of the planets made some early astronomers doubt that they revolved around the sun?
Early astronomers doubted that the planets, particularly the Earth, revolved around the sun because from the perspective of an observer on Earth, the planets seemed to be at rest. They believed that the sun particularly moved around the Earth.
Why can't hubble be used to detect extrasolar planets?
It actually can and is used to detect extrasolar planets, mostly through watching their transits, where they move in front of the star and block some of its light.
Why stars appear as points while planets appear as discs?
The farther away something is, the smaller it appears. Some stars are so far away that it takes billions of years for the starlight to go from the star to your eyes.
Do planets orbit fast or slow if so which ones?
The close-in ones move fast, the far-out ones move slower. It's governed by Kepler's third law.
Why do some planets travel faster than others?
The speed at which planets travel in their orbits depends on their distance from the sun and their mass. According to Kepler's laws of planetary motion, planets closer to the sun orbit at higher speeds because they experience a stronger gravitational pull. Additionally, planets with less mass also tend to move faster as they are less influenced by the gravitational pull of the sun.
Why won't a 2001Sephia move forward or backward all of a sudden?
The engine mite hav some problems
Do stars move from east to west?
stars do not move at all. what you are seeing is the earths rotation. The stars seem to set with the sun and the moon because weare turning. (earth's axis)
How long has mankind known about Mars?
People have always known that some of the lights in the sky (the planets visible to the naked eye) move differently than the stars. (The stars all appear to move together, as the earth moves, but the planets move independently of the stars, of the earth, and of each other.) So people have always known about Mars in that sense. But it wasn't until later that people discovered that Mars was a ball of rock, like earth.
How can one see the planets?
You can see some of the planets with the naked eye. The following can be seen easily; they appear as bright stars: Mercury, Venus, Mars, Jupiter, Saturn. To see other planets, telescopes are required.
Do planets move in elliptical orbits?
The planets move intheir ellipticalorbits becauseof the gravitation of the Sun combined withthe inertial velocity of the planets(tangentialto their orbital paths). Mathematics shows the resulting orbits must be ellipses. (Some of the ellipses are in factalmost circles.)
Which planets move in an elliptical pattern?
They all do. Some planets are closer to a circular orbit than others (have a lower eccentricity), but none are exactly circular.
Which planets are not seen at midnight and why?
The planets continually move among the stars, causing them to appear in constantly changing places, in the sky and among the constellations. Mercury and Venus can never appear in the east at sunset. Since their orbits keep them closer to the sun than earth's orbit keeps us, there's a limit to how far from the sun they can appear in our sky. But each of the so-called "superior" planets ... each one farther from the sun than earth ... can appear anywhere in our sky at some point during its orbit.
What characteristics of the planets made some early astronomers doubt that they revolved around the sun?
Early astronomers doubted that the planets, particularly the Earth, revolved around the sun because from the perspective of an observer on Earth, the planets seemed to be at rest. They believed that the sun particularly moved around the Earth.
Why do stares appear to move across the sky during night?
cos some are shooting stars and comets! and stars move around
Why can't hubble be used to detect extrasolar planets?
It actually can and is used to detect extrasolar planets, mostly through watching their transits, where they move in front of the star and block some of its light.
What are some examples of dead metaphor?
the mouth of a river, the face of a clock , to fall into the belt , to rise above difficulties , to move ahead, to look backward,... Cherry le
Why stars appear as points while planets appear as discs?
The farther away something is, the smaller it appears. Some stars are so far away that it takes billions of years for the starlight to go from the star to your eyes.
