- NASA is committed to stimulating the economy in low-Earth orbit as the next step in humanity’s exploration and expansion into the solar system.
- Welcome to Satellite Map. This application maps the current location of about 19,300 manmade objects orbiting the Earth. Use the Preset dropdown menu to conveniently select a subset of satellites, for example, Russian or low earth orbit satellites.
- The low earth orbit extends from 160km above Earth and ends at 2000km. It is not possible to achieve an orbit below 160km without artificial thrusters due to the atmospheric drag at that altitude. The mean orbital velocity of any satellite that needs to reach an LEO should be 7.5km/s (27,000km/h). This value decreases as the altitude increases.
The James Webb Space Telescope will not be in orbit around the Earth, like the Hubble Space Telescope is - it will actually orbit the Sun, 1.5 million kilometers (1 million miles) away from the Earth at what is called the second Lagrange point or L2. Short version: Earth's average orbital speed is about 30 kilometers per second. In other units, that's about 19 miles per second, or 67,000 miles per hour, or 110,000 kilometers per.
If the sun's path is observed from the Earth's reference frame, it appears to move around the Earth in a path which is tilted with respect to the spin axis at 23.5°. This path is called the ecliptic. It tells us that the Earth's spin axis is tilted with respect to the plane of the Earth's solar orbit by 23.5°. Observations show that the other planets, with the exception of Pluto, also orbit the sun in essentially the same plane. The ecliptic plane then contains most of the objects which are orbiting the sun. This suggests that the formation process of the solar system resulted in a disk of material out of which formed the sun and the planets. The 23.5° tilt of the Earth's spin axis gives the seasonal variations in the amount of sunlight received at the surface. |
Pluto 's orbit is exceptional in that its orbit makes an angle of 17° with the Earth's orbit. This has led to a number of theories about Pluto's origin. Mercury is the only other planet which moves significantly away from the ecliptic plane ( 7°) .
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Englsh-Russian aviation and space dictionary. - M.: Military publishing house USSR Ministry of Defence. edited by M. Murashkevich. 1974.
Смотреть что такое 'orbit the earth' в других словарях:
Earth Orbit Km
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