Less chilling but just as thrilling night skies in March
Stargazing has it all in March. All the great evening winter constellations
are still available, and in most places, you don’t have to bundle up quite as
much.
The first and last two weeks of March are especially wonderful because
there isn’t much moonlight, leaving you with darker skies to explore
celestial treasures. The full moon is on March 18. It has several
nicknames. Many Native American tribes called it the Worm Moon since
that was the time of the year earthworms emerged from winter
hibernation as the ground softened. Some of the other names for the
March full moon are the Crow, Crust, and Lenten Moon.
Spring begins two days later on March 20th, at least astronomically. The
start of spring is marked by the vernal equinox when all around the globe,
days and nights are nearly equal in length, about twelve hours each.
Anywhere along Earth’s equator, the sun will be directly overhead at noon.
From this point on, the northern hemisphere receives more sunlight each
day, increasing daylight hours until June 21st. The bad news for us
stargazers is that we have to wait later and later for true nightfall.
One of the great constellations of spring is rising in the evenings in the
Butler eastern skies. It’s Leo the Lion. Look for a distinctive backward
question mark that outlines the chest and head of Leo. Regulus is the
moderately bright star at the bottom of the question mark that marks Leo’s
heart. As March continues, Leo will appear higher and higher in the sky as
nightfall sets in.
Meanwhile, Orion and the rest of the beautiful winter constellations are
still performing in the evening skies, but this will be the last full month
you’ll be able to enjoy this close-knit group of bright stars. As Earth
continues its orbit of the sun, the nighttime side of Earth will gradually turn
away from that part of space where all those wonderful winter shiners are.
The three bright stars in a row that comprise Orion’s belt jump out at you.
Nowhere else in the sky will you see three stars this bright in a perfect row.
Below his belt are three fainter stars in a row that outline the hunter’s
sword. The middle star is the famous Orion Nebula, which appears as a
faint fuzzy star to the naked eye. It’s a superb telescope target, even if you
have a small scope. You’re witnessing a giant cloud of excited hydrogen gas
with stars gravitationally forming within it. To travel there would require a
journey of over 1300 light-years. Just one light-year equals nearly six trillion
miles! Using a small telescope, you can see a tight cluster of four stars born
within the Orion Nebula. They’re called the Trapezium stars because
they’re arranged in a tight trapezoid pattern.
In the northern sky, the Big Dipper is standing up on its handle. The
fainter Little Dipper is off to the left, hanging by its handle. The bright star
Polaris, otherwise known as the North Star, shines at the end of the Little
Dipper’s handle. Polaris shines directly above the Earth’s terrestrial North
Pole, so all stars in the northern hemisphere appear to circle the North Star
every 24 hours in response to the Earth’s rotation.
To be totally honest, it’s not a very good month for observing the
planets. In the early morning pre-twilight, Venus dominates the very low
southeastern sky. With a small telescope or even a pair of binoculars, Venus
will appear as a half-moon this month. That’s because of the 90-degree
angle between the sun, Earth, and Venus. Unfortunately that’s about all
there is to see with Venus because of its thick, highly reflective, and
poisonous atmosphere. Just to the lower left of Venus at the start of March
is the much fainter planet, Mars. Despite its faintness you should easily see
its distinct reddish hue. As 2022 continues, Mars will become brighter and
brighter and will eventually enter the evening sky in autumn. In December,
Mars will be super bright and the closest it’s been to Earth in over two
years. In the second half of March, Saturn will join Venus and Mars in the
early morning sky, but it will be faint and fuzzy. On March 28th, the thin
waning crescent moon will join the trio of planets to make for some
genuinely nice early morning celestial eye candy!
Enjoy the star-filled and warmer nights of March!
Mike Lynch is an amateur astronomer and retired broadcast
meteorologist for WCCO Radio in Minneapolis/St. Paul. He is the author
of "Stars: a Month by Month Tour of the Constellations," published by
Adventure Publications and available at bookstores
and adventurepublications.net. Contact him at mikewlynch@comcast.net.
