GJ 273b – Exoplanet in the constellation Little Dog
GJ 273b – Planet orbiting the Luyten star
Size: 1,47 Earth
Mass: 3 Earth
Equivalent temperature: -6°C
Twelve light-years from our solar system, Luyten’s star, the red dwarf, wanders from Earth in the constellation Little Dog. Astronomers have discovered two exoplanets next to it. At the same time one of them belongs to the superearth category and at the same time circulates at the edge of the ecosystem. In contrast to the many other planets whose parent star is a red dwarf, GJ273b knows what day is and what is the night. Usually, the planets move close enough that their rotation is connected, and their parent star only puts one hemisphere.
Stars turnover – Speed of stars rotation
Stars turnover – Speed of stars rotation – The Sun rotates at the equator at a speed of 2 km / s.
Astronomers have discovered that the star of the Tarantula Nebula – VFTS102,
rotates at a record speed of 600 km/s.
Phenomena on Venus
Phenomena on Venus – The planet Venus, like Earth, has the ozone layer. Rotates inversely to the other planets of the Solar System – from east to west.
Golf ball dimples – Increase lift and reduce drag
Golf ball dimples – Alter the flow of air to increase lift and reduce drag. During the rotation of balls in the air cause high blood pressure under the ball, and the vacuum over it. Reduce resistance by “holding the air“ around the ball, which reduces the inhibitory sucking emerging behind the ball “tail“ of vacuum and allows the ball to fly farther.