A motivation for Newton to invent integral calculus was to prove that for the purpose of determining the motions of celestial bodies affected by the...
Taking Comet Halleys J1994.13 eccentricity (e) of 0.9671429085 and semi-major (a) axis of 17.83414429, then its distance from the Sun averaged over...
The astronomical unit (AU) was recently standardized by the IAU to be precisely 149,587,870.7 km. It is that length (rounded to 0.1 km) for which the...
I highly doubt there are other technological civilizations in the galaxy. Obviously, some other folks believe (hope, wish) there are. If they want to...
Its nearly time for my monthly naked-eye New Moon spotting challenge, which is relatively easy for observers north of the tropics during the months...
The Moon will occult the minor planets 134340 Pluto and 5 Astraea on 2013 APR 30 and MAY 01 respectively, as seen during early mornings from portions...
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