October 20, 2021: Mercury is brightening in the morning sky. Brilliant Venus, Jupiter, and Saturn are in the evening sky. The bright moon starts the evening low in the eastern sky.
October 19, 2021: Four bright planets are visible during a twenty-four-hour interval. Mercury is in the morning sky, while Venus, Saturn and Jupiter are joined by a nearly full moon.
October 18, 2021: Jupiter’s illusion of retrograde motion ends today. Arcturus is appearing in the morning sky along with Mercury. The planet pack – Venus, Saturn, and Jupiter – and the moon are in the evening sky.
November 19, 2021: A morning lunar eclipse is visible from across most of North America. The moon is almost completely immersed in Earth’s shadow at 3:02 a.m. CST.
October 29, 2021: Today is the date for equal daylight and equal darkness for about 42° north latitude. This is not to be confused with the autumnal equinox.
During 2021 into 2022, Venus passes Mars three times for a triple conjunction. The first occurs on July 12, 2021. The others occur during early 2022, followed by a close approach of the two planets.
Venus moves through the classic Scorpion (Libra, Scorpius, and Ophiuchus) during 46 days. Venus sets later each evening and brightens in the sky. On October 9, the moon is near Venus and Delta Scorpii. A week later, Venus passes Antares. Look for an evening half phase through a telescope near the end of October and the evening greatest elongation.
2021: Venus is the evening star that is visible in the west for the rest of the year beginning in late April. The crescent moon appears with Venus each month. Venus conjunctions occur with Mercury, Mars and bright stars.
October 24, 2021: Saturn is at its closest to Jupiter as the Jovian Giant picks up eastward speed. The morning moon and Mercury are visible before sunrise. Brilliant Evening Star Venus, Saturn, and Jupiter are in the sky after sunset.
October 23, 2021: This morning the bright moon is near the Pleiades star cluster. Mercury is making its best morning appearance. In the evening sky, Venus, Jupiter and Saturn are easy to spot.
October 22. 2021: Speedy Mercury is low in the east before sunrise. It is putting on its best morning performance of the year. Arcturus, in the east-northeast, is about the same altitude as Mercury.
October 21-November 1, 2021: Brilliant Venus steps through Ophiuchus to the upper left of the star Antares in the southwest after sunset . Afterward, the planet steps farther eastward.
October 21, 2021: The bright moon is low in the west about an hour before sunrise. Mercury is in the east at about the same altitude as Arcturus. Venus, Saturn, and Jupiter shine from the evening sky.
December 18, 2021: This is the anticipated launch date of the James Webb Space Telescope, the largest and most sophisticated space telescope view the universe.