two-moons-hoax

This faked photo often appears online with the story that Mars will appear as big and bright as a full moon on August 27.

Right off, let’s say that Mars will NOT be approaching Earth this week at some extraordinary closeness.  I think this must be an offshoot of the “supermoon” phenomena.

This hoax or just misinformation has been bouncing around the Net since the days when these kinds of memes were passed via emails. Here’s what you might see posted online on Facebook or other networks

On August 27 lift up your eyes and look up at the night sky because the planet Mars will pass just 34.65 million miles from the earth. To the naked eye it will look like two moons. The next time Mars will be so close to the Earth is in 2287. No one living on this earth has ever seen this and no one living now will ever see it again!

The closes we have to there being any truth to this goes back to August 27, 2003.  Mars, the red planet, did come within 35 million miles (or 56 million kilometers) of Earth and that was its nearest approach to us in almost 60,000 years. I remember looking up that night. My view was obscured but Mars appeared approximately 6 times larger and 85 times brighter in the sky than it ordinarily does.

This what is known to astronomers as a perihelic opposition. It is a rare occurrence, but Mars comes almost as near to us every 15 to 17 years. Mars’ appearance in August 2003 wouldn’t have looked much bigger to the eye than on its other close appearances.

If you want to mark your calendar for 2018 (I’ll queue up the blog post now), our view of Mars will be similar to the 2003.

But it won’t be until the year 2287 that Mars will come closer to Earth than it did back in 2003.

So is anything interesting happening this week in the sky?  EarthSky reports that first of all the moon will not be full on August 27, 2014 but just a thin crescent in the west after sunset. Mars will also not be at its brightest or its closest at all in 2014.

It’s still a good idea to look up in the sky at night and enjoy the Moon, the stars and the planets.

Mars_Hubble1

Mars will never appear as large as a full moon in Earth’s sky. But if it did, it might look like this NASA photo taken of it from the Hubble Space Telescope.

 

 

Advertisements