how many miles above earth does outer space start
Outer space Outer space does not begin at a definite altitude above the Earth's surface. However, the Kármán line, at an altitude of 100 km (62 mi) above sea level,[7][8] is conventionally used as the start of outer space in space treaties and for aerospace records keeping. The framework for international space law was established by the Outer Space Treaty, which entered into force on 10 October 1967. This treaty precludes any claims of national sovereignty and permits all states to freely explore outer space. Despite the drafting of UN resolutions for the peaceful uses of outer space, anti-satellite weapons have been tested in Earth orbit.
Outer space Earth's gravity reaches out far past the Van Allen radiation belts and keeps the Moon in orbit at an average distance of 384,403 km (238,857 mi). The region outside Earth's atmosphere and extending out to just beyond the Moon's orbit, including the Lagrangian points, is sometimes referred to as cis-lunar space.[106] By consensus, any region beyond cislunar space is referred to as deep space.[107] The region of space where the gravity of the Earth remains dominant against gravitational perturbations from the Sun is called the Hill sphere.[108] This extends well out into translunar space to a distance of roughly 1% of the mean distance from the Earth to the Sun,[109] or 1.5 million km (0.93 million mi).
Time Earth is split up into a number of time zones. Most time zones are exactly one hour apart, and by convention compute their local time as an offset from GMT. For example, time zones at sea are based on GMT. In many locations (but not at sea) these offsets vary twice yearly due to daylight saving time transitions.
Paris Peace Accords