Gram-negative ((of bacteria) being of or relating to a bacterium that does not retain the violet stain used in Gram's method). Hyponyms (each of the following is a kind of bacteria): acidophil; acidophile (an organism that thrives in a relatively acid environment).
Gravity from the Sun reaches throughout the solar system and beyond, keeping the planets in their orbits. Gravity from Earth keeps the Moon and human-made satellites in orbit. It is possible to far away from a planet or star and feel less gravity, because gravity decreases with distance.But that doesn't account for the weightless feeling that astronauts experience in space.ravity from the Sun reaches throughout the solar system and beyond, keeping the planets in their orbits. Gravity from Earth keeps the Moon and human-made satellites in orbit. It is possible to far away from a planet or star and feel less gravity, because gravity decreases with distance.
The Two Forces That Keep the Planets in Motion Around the Sun By Kimberly Turtenwald; Updated April 24, 2017 Many people know that the planets in Earth's solar system move around the sun in orbits. This orbit creates the days, years and seasons on the Earth. However, not everyone is aware of why the planets orbit around the sun and how they remain in their orbits. There are two forces that keep the planets in their orbits.