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[Preston Dyches] What's Up for March?

Planet-palooza in the morning,

a "Sirius" look at the Dog Star,

and an evening trio at the end of the month.

If you're up early any morning during March,

you'll want to go out and look toward the east

to catch a lovely grouping of Mars, Jupiter and Saturn.

The three planets are visible before dawn

throughout the month.

At the beginning of March they form a line,

with Mars located hereabove Jupiter.

But each morning as the month goes on,

Mars appears to get closer to the giant planets.

On the 17th, 18th, and 19th, an increasingly slim crescent Moon

joins the three planets in a celestial quartet.

Mars then passes just beneath Jupiter

on the 19th through the 21st,

before continuing on its way,

ending the month here,

just beneath Saturn.


Winter and early spring are a great time to marvel at Sirius━-

the brightest star in our sky.

Sirius is nicknamed "the Dog Star,"

because it's the brightest star

in the constellation Canis Major.

The main reason it's so bright in our sky

is that it's one of the closest stars to our Sun,

at just 8.6 light years away.

Now Sirius is actually a binary star system,

with a tiny, white dwarf companion

(although you'd need

a decent- sized telescope to see it).

Sirius is super easy to locate:

Just face toward the south and look for Orion.

The three bright stars that make up Orion's belt point downward,

toward Sirius.

(Unless you're in the Southern Hemisphere,

and then they point up toward Sirius.)

NASA's Voyager 2 spacecraft,

which in the past few years

has begun exploring interstellar space,

is actually headed in the direction of Sirius.

It'll pass within 4.3 light years of the bright star

in about 300,000 years.


Finally this month, on March 28th,

enjoy a beautiful grouping of Venus,

the crescent Moon and the Pleiades

in the western sky after sunset.

The Pleiades are one of the best-known star clusters

in the sky because they're so bright and easy to see

even in most urban areas.

Although only a handful of the brightest stars in the cluster

are visible to the unaided eye,

there are actually hundreds there,

and they are dazzling when seen through binoculars

or a small telescope.


Here are the phases of the Moon for March.

You can catch up on all of NASA's current

and future missions at

I'm Preston Dyches from NASA's Jet Propulsion Laboratory,

and that's What's Up for this month.

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