English astronomer and mathematician. At the age of 24, Adams was
the first person to predict the position of a planetary mass beyond
Uranus. After Johann Gottfried Galle confirmed the existence of Neptune
based on independent calculations done by Urbain Jean Joseph
Le Verrier, the two became embroiled in
a dispute over priority.
(1) Material that is formed or introduced from somewhere other
than the place it is presently found. (2) Fragmented rock thrown
out of the crater during its formation that either falls back to
partly fill the crater or blankets its outer flanks after the impact
event.
Asteroids are assigned a serial number when they are discovered;
it has no particular meaning except that asteroid N+1 was discovered
after asteroid N.
The Northern Lights caused by the interaction between the
solar wind, the Earth's magnetic field and the upper atmosphere;
a similar effect happens in the southern hemisphere where it is known as
the aurora australis.
