The new moon of January will be at 7:36 a.m. Eastern Time on Jan. 29, according to the U.S. Naval Observatory, and two days ...

But the basic principles behind celestial navigation are fairly straightforward ... This means that if the sun is above the longitude of 0 degrees at noon, one hour later it will be above 15 ...

The event is called great conjunction because at the time they will have the same right ascension or celestial longitude. This union between the two planets is also rare because unlike ...