How you can watch Mars disappear behind the full moon tonight


If you occur to have clear skies on Wednesday evening, you’ll have the ability to catch a planet disappearing behind the moon.

The occasion happens at a particular time for Mars. On Wednesday evening, Mars can be immediately reverse the solar’s place in the sky, rising as the solar units and setting as the solar rises. This is known as an opposition and is when Mars is at its brightest in the evening sky.

“Having the moon conceal a vibrant planet is uncommon,” stated Alan Dyer, an newbie astronomer and completed astrophotographer who will watch the occasion from his residence close to Strathmore, Alta.

“Having it accomplish that on the very evening a planet is at its brightest, as Mars now’s, could be very uncommon. And with the objects so well-placed excessive in our sky. Fabulous!”

When a planet or a star disappears behind one other object, it is known as an occultation. The subsequent time this occurs between the moon and Mars can be in January 2025, though will probably be two days earlier than opposition.

When and the place to look

Canada is in a chief location for the occasion.

Elaina Hyde, director of the Allan I. Carswell Observatory at York University’s division of physics and astronomy in Toronto, can be wanting ahead to Wednesday evening’s occultation. 

“Tonight, the occultation of Mars by our moon requires a ‘excellent’ alignment,” she stated. “In reality, not everybody on Earth will even have the ability to see this one.”

If you wish to watch Mars blink out behind the moon, you simply want clear skies. However, binoculars will present a greater view (although, be warned: a full moon is kind of vibrant with binoculars or a telescope). 

Because the occultation is between the moon, which is tremendous vibrant, and Mars, which is at its brightest, they’re simple to seek out.

All you need to do is look east to seek out the moon. Mars will seem at the left or decrease left, relying in your location.

People throughout North America in the shaded areas on the map will get pleasure from the the sight of the moon eclipsing Mars on Wednesday evening. (Gregg Dinderman/Sky & Telescope)

You can step by step watch the occasion unfold proper after sundown, when the pair can be farther aside. Over the subsequent few hours, the pair will step by step seem to get nearer and nearer. The moon will appear to maneuver to the left as they rise in the sky, ultimately overtaking Mars. 

How lengthy Mars will keep eclipsed behind the moon is determined by your location: it may very well be a number of minutes or about an hour. This is as a result of it is determined by how a lot of the moon’s disc Mars might want to traverse.

For instance, in Toronto, Mars will solely cross a small fraction of the moon’s decrease disc, starting at 10:29 p.m. ET and re-emerging roughly 45 minutes later. In Edmonton, it’s going to take greater than an hour for the total occasion.

Here are the approximate instances when Mars will disappear behind the moon. All instances are native:

  • Vancouver: 6:55 p.m. 
  • Edmonton: 8:04 p.m.
  • Calgary: 7:59 p.m.
  • Regina: 9:01 p.m.
  • Saskatoon: 9:03 p.m.
  • Winnipeg: 9:05 p.m.
  • Toronto: 10:29 p.m.
  • Ottawa: 10:36 p.m.
  • Montreal: 10:40 p.m.
  • Iqaluit: 9:50 p.m.
  • Whitehorse: 8:25 p.m.
  • Yellowknife: 8:23 p.m.


  • Halifax: 12:15 a.m.
  • Charlottetown: 12:07 a.m. 
  • Moncton: 12:04 a.m. 
  • St. John’s: 12:25 a.m.

You can discover extra areas right here.

Remember, the occasion happens all evening, so you can take a peek outdoors every so often main as much as the occultation and afterwards because it progresses. 

You can also discover a vibrant purple star not too far-off from the moon and Mars, however to the proper. That’s Aldebaran, the brightest star in the constellation Taurus.

This purple big lies close to one in all the most stunning open star clusters in the northern sky, Hyades. In a couple of days’ time, as soon as the moon strikes away from that space of the sky, attempt utilizing a pair of binoculars to take a look at the cluster.

Also, since you’re outdoors on Wednesday evening, why not take a peak to the southwest the place Jupiter can be fairly obvious as the brightest object in the sky (apart from the moon). A pair of binoculars may also reveal 4 of its brightest moons, Io, Callisto, Ganymede and Europa. 


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