Where are they now? planet finding guide
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Read the monthly happenings section for this month's astronomy events. You can also check out the new monthly events calendar.
Astronomical event lists
Conjunctions Conjunctions are when two objects line up on a north-south line Moon Phases Moon Phases new, first quarter, full, last quarter Oppositions Oppositions when an object is up all night because it's opposite the sun
Earth's Seasons Earth's Seasons winter, spring, summer, fall Eclipses Eclipses when the moon passes in front of the sun or the moon goes through Earth's shadow Mars's Seasons Mars's Seasons are not much like Earth's
Aphelions Aphelions are when planets are at their farthest from the sun Lunar Nodes Lunar Nodes are when the moon crosses the ecliptic--the sun's travel line Perihelions Perihelions are when planets are at their closest to the sun
Greatest Elongations Greatest Elongations when Mercury and Venus appear as far from the sun as they will get Planets' Circumstances Planets' Circumstances including evening or morning visibility, direct or retrograde motion, and the constellations they're in Lunistices and more Lunistices and more northern and southern lunistice, and when the moon crosses the equator
Occultations Occultations happen when the moon passes in front of another object Moon's perigee and apogee Moon's perigee and apogee are when the moon is closest to and farthest from the earth Transits Transits of Mercury and Venus in front of the sun

The searchable events database now contains events from 2010 to 2029! Look things up by object (Sun, Venus, Jupiter, etc.) or by event type (solar eclipses, moon phases, planets at opposition, etc.) with a date range you specify. Please understand that meteor showers, aurorae, and other events that are difficult or impossible to predict are not listed in the database.

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