- Lunar and planetary exploration is a proposition far different from orbiting Earth.
- Embedded in this crucible of star creation are embryonic planetary systems.
- The first of his laws of planetary motion asserts that planets orbit the Sun in ellipses.
- In 1954 he developed his work on dynamical systems in relation to planetary motion.
- Now, though, the planetary astronomy community has an opportunity to make a breakout move.
- The solar motion is relatively constant, but the planetary motion appears to change greatly according to the direction from which it is seen.
- So many, perhaps most, of these so-called planetary systems may in fact be stellar or brown dwarf binaries.
- This tradition owed much to Ptolemy's work on planetary motions.
- This strange planetary system came as quite a surprise to secular astronomers.
- Newton, too, chose to work principally in the more traditional field of planetary astronomy.
- This is the smallest potential solar system ever seen, and could help scientists understand more about how planetary systems form.
- Six of these discoveries are of planetary systems with two or more planets.
- New planetary star systems and galaxies are being discovered almost daily.
- Jupiter is the largest of our nine planets, containing two-thirds of the planetary mass of our Solar System.
- Another example of these points is provided by Kepler's work on planetary motion.
- His work ran the gamut from star and planetary system formation to the study of the planets themselves.
- If so, such a cropping would have directly affected the development of our entire planetary system.
- The Universe has its own heavenly sounds, such as pulsars, planetary magnetospheres and solar winds.
- This lead may account for the missing evidence of red dwarfs forming planetary systems.
- As solar system exploration continues, so too will planetary protection policies.