Planets Align: Venus, Jupiter, Mercury, Mars & Moon To Appear Sunday

The brightest planets are lining up in the sky tonight.

Note to sky watchers: Put on your coats. What you’re about to read might make you feel an uncontrollable urge to dash outside.

The brightest planets in the solar system are lining up in the evening sky, and you can see the formation—some of it at least—tonight. 

The planets Venus and Jupiter dominate the western evening sky at sunset on Sunday, with the crescent moon hovering nearby. The planet Mercury joins the cosmic trio briefly just after sunset before slipping below the horizon, according to Tariq Malik of space.com

The planet Mars is also making its own appearance in the evening sky, but rises in the east a few hours after sunset in its own solo celestial show.

The sky maps of Jupiter, Venus and the moon here show how the bright objects, as well as Mars later, will appear in the night sky. 

"This is a great weekend to watch the sun go down. Venus, Jupiter and the slender crescent moon are lining up in the western sky, forming a bright triangle in the evening twilight," astronomer Tony Phillips of the skywatching website Spaceweather.com wrote in an alert. "These three objects are so bright, they shine through thin clouds and even city lights." [Skywatcher Photos: Jupiter, Venus & the Moon]

The Moon, Venus and Jupiter are the brightest objects in the night sky; together they can shine through urban lights, fog, and even some clouds.

After hopping from Venus to Jupiter in late February, the Moon exits stage left, but the show is far from over.

In March, Venus and Jupiter continue their relentless convergence until, on March 12 and 13, the duo lie only three degrees apart—a spectacular double beacon in the sunset sky (sky map). 

There’s something mesmerizing about stars and planets bunched together in this way—and, no, you’re not imagining things when it happens to you.  The phenomenon is based on the anatomy of the human eye.

Dr. Stuart Hiroyasu of Bishop, California: "There's a lens in front to focus the light, and a photo-array behind the lens to capture the image. The photo-array in your eye is called the retina. It's made of rods and cones, the organic equivalent of electronic pixels."

There’s a tiny patch of tissue near the center of the retina where cones are extra-densely packed. This is called “the fovea.”

"Whatever you see with the fovea, you see in high-definition," Hiroyasu says. The fovea is critical to reading, driving, watching television. The fovea has the brain's attention.

The field of view of the fovea is only about five degrees wide. Most nights in March, Venus and Jupiter will fit within that narrow cone.  And when they do—presto!  It’s spellbinding astronomy.

Standing outdoors, mesmerized by planets aligned in a late winter sunset, you might just forget how cold you feel.  Bring a coat anyway….

--Tony Phillips, NASA

Chris Lombard February 27, 2012 at 02:40 AM
Awesome! Thanks for the heads up on this one. Great view from Simi Valley at 6:30 pm.
Liah February 27, 2012 at 08:06 AM
Wow, too bad it's so cloudy here ...hope to see the stars tomorrow
E.Robert February 27, 2012 at 01:32 PM
From Casa Grande, AZ the view is spectacular! Thanks for the heads up. And to Dr. Stuart Hiroyasu, thank you for the explanation of "seeing, the fovea, and high-definition"! Oh and Hi from another Bishop High Graduate. E.Robert
Steven February 28, 2012 at 03:32 AM
I saw this phenomenon yesterday and went into discussion about which planets they might have been...Immediately guessed Venus and Jupiter but had no idea that Mercury and Mars were there as well...I guess they are just lined up for the big alignment of December22nd
teach me logic & science March 16, 2012 at 01:20 AM
There is no big alignment on 12/21, 22 or any other day! Can't we just enjoy these spectacular astronomical events without attaching superstition & nonsense to them?


More »
Got a question? Something on your mind? Talk to your community, directly.
Note Article
Just a short thought to get the word out quickly about anything in your neighborhood.
Share something with your neighbors.What's on your mind?What's on your mind?Make an announcement, speak your mind, or sell somethingPost something
See more »