The name Alanna is a Gaelic baby name. In Gaelic the meaning of the name Alanna is: This name of uncertain origin may be a feminine form of Man, or derived from the Irish Gaelic word for 'child'.American Meaning: The name Alanna is an American baby name.In American the meaning of the name Alanna is: This name of uncertain origin may be a feminine form of Man, or derived from the Irish Gaelic word for 'child'. Irish Meaning: The name Alanna is an Irish baby name.In Irish the meaning of the name Alanna is: Beautiful. Dear child. Celtic Meaning: The name Alanna is a Celtic baby name. In Celtic the meaning of the name Alanna is: meaning harmony, stone, noble, or fair.he name Alanna is an American baby name. In American the meaning of the name Alanna is: This name of uncertain origin may be a feminine form of Man, or derived from the Irish Gaelic word for 'child'.
Yes. One of the physical laws that describe orbits in response to a central force is the fact that the smaller the orbit, the faster the orbiting body travels. Earth's average speed in its orbit around the sun is 18.5 miles (29.8 km) per second. Mercury's average speed in its orbit around the sun is 29.7 miles (47.9 km) per second.
Compared to Earth, Mercury has a very long day. A day on Mercury takes 58 days and 15 hours in Earth days. A day on Mercury is only a little shorter than a year on the planet.Venus is the slowest moving planet.ome astronomers believe that we will never know how long a day on Saturn is. A day on Uranus only takes 17 hours 14 minutes and 24 seconds. Since the planet has such an extreme axial tilt (97.8Â°), it actually rotates on its side. A day on Neptune lasts 16 hours 6 minutes and 36 seconds in Earth time.