  Perhaps the biggest hurdle to mankind's expansion throughout the Solar System
is the prohibitive cost of escaping Earth's gravitational pull. In its many
forms, the space-elevator provides a way to circumvent this cost, allowing
payloads to traverse along a cable extending from Earth to orbit. However,
modern materials are not strong enough to build a cable capable of supporting
its own weight. In this work we present an alternative to the classic space
elevator, within reach of modern technology: The Spaceline. By extending a
line, anchored on the moon, to deep within Earth's gravity well, we can
construct a stable, traversable cable allowing free movement from the vicinity
of Earth to the Moon's surface. With current materials, it is feasible to build
a cable extending to close to the height of geostationary orbit, allowing easy
traversal and construction between the Earth and the Moon.
