Chinese Scientists Plan to Pull an Asteroid into Orbit Around Earth

Chinese Scientists Plan to Pull an Asteroid into Orbit Around

Earth

Last week Chinese scientists wanted to divert an asteroid away from Earth. This week, they want to pull one into orbit around the Earth. What’s possible objections could anyone have to this idea?

The notion stems from a phenomenon the researchers from Tsinghua University in Beijing noticed from time to time with Jupiter. Every now and then our solar systems biggest planet pulls in an object from space, which orbits the planet for a time before jetting off into interplanetary space again.

We could do something similar with a number of near earth objects (NEOs) that will pass near Earth in the coming years and decades. None of these objects will pass close enough to be naturally captured by Earth’s gravity, but a few will come so close that a small nudge in the right direction would put them in orbit--likely a temporary orbit--around Earth.

The idea isn’t simply to flirt with cataclysmic danger, but to bring a small object (they suggest a 10-meter object called 2008EA9 that will pass nearby in 2049) into a loop around the Earth so we can study it closely for a few years. If we can get the art of capturing asteroids orbitally down to a science, we could use it to temporarily make asteroids into Earth-bound satellites (orbiting at about twice the distance of the moon), mine them for minerals, and then send them on their ways.

technology/Satellite History | Invention Story of Satellites

Satellite History | Invention Story of Satellites

It all started with basketball-sized pack of technology known as Sputnik 1. World’s first ever satellite was launched on October 4, 1957 by Soviet Union. Weighing 183 pounds, it took around 98 minutes to orbit Earth. While launch of the satellite was just a single event, it marked the beginning of space age and steered new military, political, scientific and technological developments.

The seed of its invention was sown back in year 1952, when International Council of Scientific Unions came to a decision of establishing July 1, 1957-December 31, 1958 as International Geophysical yr. It was decided so because scientists knew solar activity cycle would be at high points around this time. And eventually, council took up a resolution calling launch of the artificial satellites during International Geophysical yr. for mapping Earth’s surface.

White House declared plans of launching earth orbiting satellite and requested proposals from different governmental research agencies for undertaking development in July 1955. Vanguard proposal by Naval Research lab was picked for representing U.S during International Geophysical yr. And launch of Sputnik revolutionized everything. The technical achievement of Sputnik was that it did not just grab world’s attention but America’s public off-guard too. The size of this satellite was impressive as compared to Vangaurd and anticipated payload of 3.5 pounds. Additionally, public feared Soviet’s ability to commence satellites also translated to capability for launching ballistic missiles that could be used to transfer missiles from Europe to U.S. After that, Soviet’s had hit back with launch of Sputnik II on November 3, 1957.

Also, immediately after the launch of Sputnik 1, Defense department of U.S retorted to political disturbance with fund approval for Satellite project. Later as an alternative to the Vangaurd, work was initiated on Explorer project. Eventually, U.S launched Explorer 1 on January 31, 1958.