7 fastest objects humanity ever built

With the development of science and technology, mankind has created many fast-moving objects that surpass imagination . Here are the 7 fastest artificial objects recorded in human history.

7.

The X-43 is the fastest aircraft ever built. This unmanned aircraft is designed to test supersonic jet engine technology at speeds above Mach 5 (about 6170km / h). However, this type of aircraft is said to be able to reach speeds of up to Mach 10.

6. Spaceship (28,160km / h)

With the auxiliary fuel tank containing nearly 2 million liters of oxygen - mixed liquid hydrogen and three giant main engines, the spacecraft is capable of reaching a speed of about 28,160km / h and maintaining flight on the low orbit of the Left. Land.

5. Apollo 10 closed compartment (39,900km / h)

The Apollo 10 mission in May 1969 saw the fastest passenger ship in history. Apollo 10 is the final test, simulating the hypothetical situations needed to help the Apollo 11 mission succeed, bringing the first man to the moon.

4.

As a satellite designed to collect specimens on comets, Stardust of course has a tremendous speed, up to Mach 36 - the fastest in artificial objects returning to the once recorded atmosphere. .

3.

Launched into space by NASA in 1977, Voyager 1 satellite is an artificial object that flies away from Earth most humans have ever built. In 2013, Voyager 1 went to interstellar space. It is known that this satellite travels more than 500 million kilometers per year.

2. A manhole cover made of iron (201,168 km / h)

In a test of underground nuclear bombs in 1957, American scientists accidentally "fired" a 10-centimeter-thick manhole cover, weighing nearly 227 kilograms into the air. More amazingly, the high-speed camcorder used in the experiment - which can record a frame / millisecond - can only 'capture' exactly one frame containing the manhole cover. Dr. Robert Brownlee, who designed the experiment, said it was difficult to know what happened to the manhole cover. However, he judged that the lid could have reached a speed of six times the speed needed to win Earth's gravity (ie 67.2 km / s).

first.

Designed in the 1970s to study the sun, two satellites Helios 1 and 2 broke all records of human speed. It is known that Helios 1 only takes 2 years to get closer to the Sun than Mercury.