Search results
Results from the WOW.Com Content Network
The first space rendezvous was accomplished by Gemini 6A and Gemini 7 in 1965.. Records and firsts in spaceflight are broadly divided into crewed and uncrewed categories. Records involving animal spaceflight have also been noted in earlier experimental flights, typically to establish the feasibility of sending humans to outer space.
(Because the total number of ways in which all the subatomic particles in the observable universe can be combined is , [152] [153] a number which, when multiplied by , is approximately , this is also the time required for a quantum-tunnelled and quantum fluctuation-generated Big Bang to produce a new universe identical to our own, assuming that ...
A number which is a direct multiple of is known as an imaginary number. [1]: Chp 4 A number that is the sum of an imaginary number and a real number is known as a complex number. In certain physical theories, periods of time are multiplied by i {\displaystyle i} in this way.
Missions which were intended to reach space but which failed to do so are listed in bold. Missions between 50 miles (80.45 km) and 100 km (62 mi), which satisfy the US Military definition of space(50 Miles), but not the NASA or Internationally recognized Karman Line definition (100 KM) are listed in italics.
Human presence in outer space began with the first launches of artificial object in the mid 20th century, and has increased to the point where Earth is orbited by a vast number of artificial objects and the far reaches of the Solar System have been visited and explored by a range of space probes.
There's a new space race in the world, but this one isn't being driven by competing governments, but rather by billionaires. Some of the biggest names in business, from Richard Branson to Jeff ...
Reionization might have started to happen as early as z = 16 (250 million years of cosmic time) and was mostly complete by around z = 9 or 10 (500 million years), with the remaining neutral hydrogen becoming fully ionized z = 5 or 6 (1 billion years), when Gunn-Peterson troughs that show the presence of large amounts of neutral hydrogen disappear.
[36] 24 April 1990: First telescope designed to be repaired in space. USA (NASA) ESA Hubble Space Telescope [37] 2 July 1990: First time a spacecraft coming from deep space uses the Earth for a gravity-assist manoeuvre. ESA Giotto [38] 21 October 1991: First asteroid flyby (951 Gaspra closest approach 1,600 km). USA (NASA) Galileo: 1992