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  • How far do you have to be from Earth to be in space?
    Making them "the first group of students to successfully launch a rocket into space," The ISS being at about the 250 mile height, and weather balloons reaching heights of 25 miles or more, space would seem to begin someplace between those two heights Where does "space" begin?
  • orbit - Shouldnt space junk fall back to Earth on its own? How long . . .
    Debris left in orbits below 370 miles (600 km) normally fall back to Earth within several years At altitudes of 500 miles (800 km), the time for orbital decay is often measured in decades Above 620 miles (1,000 km), orbital debris normally will continue circling Earth for a century or more ”
  • trajectory - Space Exploration Stack Exchange
    The flight passed the far side of the Moon at an altitude of 254 kilometers (137 nautical miles) above the lunar surface, and 400,171 km (248,655 mi) from Earth, a spaceflight record marking the farthest humans have ever traveled from Earth Wikipedia's List of spaceflight records: Speed and altitude records (quoted in this answer) says:
  • How long does it take to get to ISS? - Space Exploration Stack Exchange
    The ISS is in orbit about 250 miles high, the students in this related question get 62 miles in less than a minute This NASA Press release indicates the The Soyuz TMA-13M launch on May 2014 has a 6 hour trip duration
  • measurement - Space Exploration Stack Exchange
    This is an interesting question, but I think Space SE is not the right site for it - meters (or km) and seconds are the most common units when folks talk about spacecraft On the other hand, Astronomy SE might be a better place to ask about current usage, since it's astronomers who use all three of those distance units in common parlance
  • Time gap between leaving the Earths atmosphere and initiation of . . .
    When the space shuttle goes out of the Earth's atmosphere, how does it then initiate going into the orbit? You're thinking of the climb out of the atmosphere and the entry into orbit as two separate operations, but it's really one continuous thing It takes several minutes for even powerful rocket engines to accelerate to orbital speeds Most of the horizontal acceleration has to happen at
  • Couldnt I escape Earths gravity traveling only 1 mph (0. 45 m s)?
    Well, as far as I understand, you could easily escape Earth's gravity even at 1 mph (0 45 m s) - directed away from the surface and you will eventually reach space So why is the escape velocity 7 miles s (11 km s)? Is it because the object has to gain a certain speed once it reaches orbit in order to maintain that altitude?
  • Newest karman-line Questions - Space Exploration Stack Exchange
    The Karman Line (named for Theodore von Kármán) represents a boundary between the Earth's atmosphere and space and is set by the FAI at 100km altitude Use this tag to discuss the line and questions about its application
  • orbital mechanics - How big is an orbit of X by Y miles? - Space . . .
    Once upon a time, someone started with a number of nautical miles rounded to the nearest hundred Someone else multiplied that number by 1 852 to convert to kilometers, and then , which were wrong by many kilometers when compared to the actual satellite's orbit
  • What is the velocity of the ISS relative to the Earths surface?
    The inclination of the ISS' orbit means that its speed relative to the Earth's surface beneath it varies constantly over its orbit, even if that orbit was circular Do you want a maximum, a minimum, an average, or a range?





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