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RSSLunar space elevator
A lunar space elevator (also
called a moonstalk) is a
proposed cable running from
the surface of the Moon into
space. It is similar in
concept to the better known
Earth space elevator idea (a
cable suspended above Earth,
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Eclipse
An eclipse is an
astronomical event that
occurs when one celestial
object moves into the shadow
of another. The term is most
often used to describe
either a solar eclipse, when
the Moon's shadow crosses
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Buzz Aldrin
Colonel Buzz Aldrin, Sc.D
(born January 20, 1930 as
Edwin Eugene Aldrin, Jr.) is
an American pilot and
astronaut who became the
second human to set foot on
the Moon (after Neil
Armstrong) during the Apollo
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Moon
The Moon is Earth's only
natural satellite. The
average distance from the
Earth to the Moon is 384,399
kilometres (238,854 mi),
which is about 30 times the
diameter of the Earth. At
this distance, it takes
... > full story
Browse Reference Articles
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Van Allen radiation belt
The Van Allen radiation belt is a torus of energetic charged particles (i.e. a plasma) around Earth, trapped by Earth's magnetic field. When the belts "overload", particles strike the upper ... > more -
Precession
Precession refers to a change in the direction of the axis of a rotating object. In certain contexts, "precession" may refer to the precession that the Earth experiences, the effects of this type of ... > more -
Impact crater
An impact crater is a circular depression on a surface, usually referring to a planet, moon, asteroid, or other celestial body, caused by a collision of a smaller body (meteor) with the ... > more -
Space suit
A space suit is a complex system of garments and equipment and environmental systems designed to keep a person alive and comfortable in the harsh environment of outer ... > more -
Outer space
Outer space, also simply called space, refers to the relatively empty regions of the universe outside the atmospheres of celestial bodies. Outer space is used to distinguish it from airspace (and ... > more -
Neptune's natural satellites
Neptune has 13 known moons. The largest by far is Triton, discovered by William Lassell just 17 days after the discovery of Neptune itself. It took a hundred years to discover the second, Nereid. ... > more -
Solar eclipse
A solar eclipse occurs when the Moon passes between Earth and the Sun, thereby totally or partially obscuring Earth's view of the Sun. This configuration can only occur during a New Moon, when the ... > more
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