As the Moon waxes to full just in time for Halloween, set your sights on its features and neighbours in the sky.
After the Orionids peak before dawn October 21, look for features on the Moon as it waxes past quarter.
The biggest highlight is Mars’ opposition October 13, but look for other events like the crescent Moon near Venus and a double shadow transit on Jupiter later in the week.
The Red Planet steals the show this month, passing closer to the Earth than it will for the next 15 years and providing the best opposition of the 2020s.
Get ready for a great show. Before Mars reaches its opposition next week, the Red Planet will be closer to Earth Oct. 5-6 than it will be for the next 15 years.
Mercury reaches greatest eastern elongation, we see the full harvest Moon and as it starts waning the Moon meets Mars.
As the autumnal equinox is marked in the Northern Hemisphere, the Moon passes near Saturn and Jupiter.
See zodiacal light this week, visible in the dark new Moon sky. Later this week, look for Mercury near the crescent Moon.
In This Week’s Sky, Mars starts a retrograde loop while Jupiter completes one. Neptune reaches opposition near Phi Aquarii, and a waning crescent Moon meets Venus.