Don't miss this month's rare planetary alignment (Thinkstock)
Don't miss this month's rare planetary alignment
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Step outside this week into the chilly predawn to see the planet Mercury peak over the horizon. Then trace an arc across the sky to pick out Venus, Saturn, Mars and Jupiter. All five will be visible together for the first time since 2005.
 
The latter four planets have been shining in the early morning since the beginning of the year, writes Tanya Hill for The Conversation. "It is the appearance of Mercury that makes the family complete," she adds. You can take in the spectacle, depending on your location.
 
Mercury usually hangs close to the horizon and is the most difficult to see. But it will gradually cross higher in the sky and by early February it will be easier to spot.
 
Starting January 28, the waning moon will travel along the line of planets, starting out at Jupiter and resting near Mercury by February 7. Venus and Saturn will dance in particularly close conjunction on February 9, report Bruce McClure and Deborah Byrd for EarthSky.org.
 
Since each planet orbits at different distances from the Sun and takes different periods of time to complete a year, this kind of alignment in the Earth's sky is rare. The fact that they do stack up in a line is visual proof that the planets do orbit on roughly the same plane, Hill writes.
 
"There are only a few amazing things in the night sky that can be seen without any equipment," Alan Duffy, a research fellow at Swinburne University in Melbourne, tells Anne Johnson of Australian Geographic. The planetary alignment is one of them, and worth an early rise. Duffy does caution that some people may have to travel farther than their front stoop to get an unobstructed view of the horizon. Trees, buildings, and city lights can all block the rare views.
 
So make sure you prepare for the show, and figure out when Mercury will rise near you, using the United States Naval Observatory's webpage. Hope for clear skies and bundle up because this may be the best view of the five planets aligned for quite a while. According to EarthSky.org, though the group will gather again in August, only those in the Southern Hemisphere will really get to see the next show.

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CRITICAL THINKING QUESTION
Why is no telescope needed to see these planets?
Write your answers in the comments section below


COMMENTS (22)
  • samuels-pay
    1/27/2016 - 11:09 a.m.

    I never thought that I'd ever see a planetary alignment. I asked a teacher years ago if that was possible. He said no. What a liar!

  • samuels-pay
    1/27/2016 - 11:11 a.m.

    Space is crazy and scary. It still amazing to me though

  • jennelw-pay
    1/27/2016 - 11:15 a.m.

    At certain times when the plants align the sun shines bright enough for us to see them from earth. I would love to see that one day and visit a planetarium.

  • veronicav1-pay
    1/27/2016 - 12:26 p.m.

    This is very cool because you can actually see the planets and not man people want to see these things because they think they're uninteresting or something but in reality it's very cool.

  • shaylonna-war
    1/27/2016 - 01:01 p.m.

    It is really cool that you can see 5 planets in the sky. You probably don't need a telescope because the planets aren't very far away and they will be bright. I really want to see the planets because they should be really easy to find. Also, I wont be able to see it again for a while.

  • joey2-war
    1/27/2016 - 01:10 p.m.

    This article perfectly depicts how amazing it is to see this kind of rare phenomenon. I think people should really take the time to see this, since this kind of planetary alignment is so rare and may not be visible for a long time. Seeing the planets is a really captivating sight, the sky is clear at this time of year, and you can pick them out of the sky perfectly.

  • TehyaWhite-Ste
    1/28/2016 - 02:32 p.m.

    A telescope isn't needed in this case because the planets are aligned in just the right way that one will be able to see them with the naked eye.

  • briannec-ste
    1/28/2016 - 05:03 p.m.

    No Telescope is needed because they will be close enough to be in peoples eye view, this is rare and also very cool. If it were during summer I would be on a blanket in the back yard.

  • erino-6-bar
    1/29/2016 - 12:15 a.m.

    No telescope is needed to see these planets because they orbit in roughly the same plane. The article says this is one of the "few amazing things in the night sky that can be seen without any equipment,"

    I liked this article because I find space very beautiful and would love to witness something like this for myself.

  • dianner-2-bar
    1/29/2016 - 08:55 p.m.

    No telescope is needed to see the planets because of how the planets will be aligned.
    I like this article because i have never seen the planets only in like movies or videos or stuff like that so i am looking forward to seeing the planets being aligned.

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