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.
Let's start with some basics. The Earth orbits the Sun while the Moon orbits the Earth. The Earth also rotates about its axis once every 24 hours making an Earth day 24 hours long.The Moon also rotates about its axis. However, due to gravity, the Moon's rotation is such that the same side of the Moon always points towards Earth.et's start with some basics. The Earth orbits the Sun while the Moon orbits the Earth. The Earth also rotates about its axis once every 24 hours making an Earth day 24 hours long. The Moon also rotates about its axis.