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Attaching any spacecraft propulsion device would have a similar effect of giving a push, possibly forcing the asteroid onto a trajectory that takes it away from Earth. An in-space rocket engine that is capable of imparting an impulse of 10 6 N·s (E.g. adding 1 km/s to a 1000 kg vehicle), will have a relatively small effect on a relatively ...
There is a point between the Earth and Sun where the gravities of the two bodies are perfectly in balance, called the Sun-Earth L1 Lagrange point (SEL1). It is approximately 1.6 million kilometres (1 million miles) from Earth, about four times as far away as the Moon, and is ideally suited for placing such a space telescope. [13]
It can also reduce or prevent the risk of propellant contamination of sensitive components. [1] The design of the GEOS-A satellite allowed for gravity-gradient stabilization with a mass attached to a boom. The technique exploits the Earth's gravitational field and tidal forces to keep the
The Earth is struck by lightning nearly 20 million times each year, and bolts of lightning can travel as much as 10 to 12 miles from a thunderstorm, instantly heating the air to 50,000 degrees ...
The Earth will be hit by a tiny asteroid today, astronomers have said. But the tiny asteroid – which is roughly one metre in size – will burn up in the atmosphere as it arrives. That means it ...
The F-region is the highest region of the ionosphere. Consisting of the F1 and F2 layers, its distance above the Earth's surface is approximately 200–500 km. [7] The duration of these storms are around a day and reoccur every approximately 27.3 days. [6] Most ionospheric abnormalities occur in the F2 and E layers of the ionosphere.
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Schumann resonance is due to the space between the surface of the Earth and the conductive ionosphere acting as a waveguide. The limited dimensions of the earth cause this waveguide to act as a resonant cavity for electromagnetic waves. The cavity is naturally excited by energy from lightning strikes. [27]