2021, April: Mars, From Taurus Into Gemini

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2021, April: Mars moves through Taurus, between the Bull’s horns, and into Gemini.

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During April, Mars moves from Taurus into Gemini.  The planet begins the evening about 50° up in the west below the horns of Taurus, Elnath and Zeta Tauri (ζ Tau), and above the “V” of Taurus with the bright star Aldebaran.  By month’s end, the planet is over one-third of the way up in the sky after sunset.  On April 30, it sets over 4 hours after sunset.  Here are the highlights of Mars position during the month.  Time for each daily note is one hour after sunset.

  • April 1: Mars is about 50° up in the west.  Tonight, it passes 2.6° to the upper right of Iota Tauri.
  • April 11: About halfway up in the west, Mars passes 3.9° to the lower left of Elnath, the Northern Horn of Taurus.
  • April 12: About halfway up in the west after sunset, Mars is below a line from Elnath to Zeta Tauri (ζ Tau). The planet is 4.0° to the lower left of Elnath and 3.9° to the upper right of ζ Tau, the Southern Horn of Taurus.
  • April 13: Less than halfway up in the west, Mars is above the line that extends between the horns of Taurus.
2021, April 16: Mars, the lunar crescent, and Elnath – the North Horn of Taurus – fit into the field of view of a binocular.
  • April 16: Over 40° up in the west, Mars – above the line that extends between the Bull’s horns – is 5.7° to the upper left of the crescent moon (5.0 days after the New moon phase, 20% illuminated).  Fit one of the horns, the lunar crescent, and Mars into a binocular field.  All four are too far apart to fit into the field simultaneously.
2021, April 17: As night falls, use a binocular to view the lunar crescent near the star cluster M35, with Mars to the lower right of the field of view.
  • April 17: Over 40° up in the west, Mars is 5.8° to the lower right of the moon (6.0d, 29%).  The moon is 0.7° to the upper right of the star cluster M35 (NGC 2168). This star cluster has overall characteristics like the Pleiades star cluster and Hyades star cluster, although it is more distant.  Use a binocular to spot Mars, the lunar slice, and the star cluster.
  • April 24: Less than 40° up in the west, Mars moves into Gemini, 3.6° to the lower right of Eta Geminorum (η Gem,).
  • April 26: Less than 40° up in the west, Mars is 0.6° to the upper right of the star cluster M35. Use a binocular to view Mars with the cluster.
  • April 29: Less than 40° in altitude above the western horizon, Mars passes 2.3° to the upper right of η Gem.

Here’s more about Mars during 2021.

2021, April 25: Mercury-Venus Conjunction, Mars, Bright Moon

April 25, 2021: Mercury passes Evening Star Venus this evening after sunset.  Look low in the western sky about 20 minutes after sunset.  Mars is marching eastward in Gemini, near the star cluster Messier 35.  The bright moon is near Spica.

2021, April 24: Evening Star, Bright Mercury, Venus, Mars, Gibbous Moon

April 24, 2021:  Brilliant Evening Star Venus and bright Mercury are entering the evening sky.  They are low in the west-northwest during evening twilight.  The bright moon is in the southeast in Virgo.  Mars moves into Gemini as it approaches the star cluster Messier 35.

2021, April 24: Lunar Occultation, Morning Planets, Jupiter Saturn

April 24, 2021:  The bright gibbous moon is near a star in Virgo during the early morning.  From parts of the Western Hemisphere, the moon covers the star.  Before sunrise, bright morning planets, Jupiter and Saturn are in the southeast before sunrise.

2021, April 23: Evening Star Venus, Mercury, Mars, Moon

April 23, 2021: Evening Star Venus and Mercury are entering the evening sky.  They are found very low in the west-northwest after sunset.  The bright moon is in the southeastern sky during the early evening.  Mars is moving toward the star cluster Messier 35.



Categories: Astronomy, Sky Watching

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