GJ 273b – Exoplanet in the constellation Little Dog

GJ 273b - Artist’s impression of the exoplanet

GJ 273b – Exoplanet in the constellation Little Dog

GJ 273b – Planet orbiting the Luyten star

ESI: 0,86
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.

Golf ball dimples – Increase lift and reduce drag

Golf ball dimples - Golf ball on grassGolf ball dimples - Golf ball - drawing

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.

Space probe New Horizons – Heading to Kuiper Belt

Space probe New Horizons - Pluto in true colorSpace probe New Horizons - Charon, image from NASA

Space probe New HorizonsSpace probe New Horizons, NASASpace probe New Horizons - Pluto and Charon, photo by NASA

Space probe New Horizons – Heading to Kuiper Belt

Space probe New Horizons – On Tuesday, July 14, 2015. Flew by Pluto. It was from him at a distance of 12.5 thousand. km, running at a speed of 13.7 km / s. New Horizons has brought us a lot of new information about the dwarf planet of the Solar System. It turned out, eg., That some formations count of less than 100 million years, so they are quite young and continuously evolving. With the mission also confirmed the synchronous rotation of Pluto’s largest moon Charon. Now the probe is heading to the Kuiper Belt, which extends from the orbit of Neptune (approx. 30 au from the Sun; 1 astronomical unit is approx. 149.5 million km) up to a distance of 55 au from the sun.

International Space Station ISS

International Space Station ISS - International Space Station 7.03.2011International Space Station ISS - International Space Station 30.05.2011

International Space Station ISS - International Space Station 19.07.2011

International Space Station ISS

International Space Station ISS – The date of the creation of the ISS is considered 20 November 1998. Then the orbit brought out the first element. It was the Russian module Zarya. ISS has been inhabited since 2 November 2000. It is located on a low earth orbit. Circling the Earth at an average altitude of 400 km. The height is adjusted, but the ISS is still lowers its flight. While planning the trajectory taken into account the availability of spaceports in Russia and the USA. One lap around the earth station takes approx. 92 minutes, so a day circling the planet 15.7 times. Compared to the Earth’s surface moves at a speed of 7700 m / s, or 27720 km / h.