Once in a lifetime comet glides over Earth

Comet Neowise (Photo courtesy Gary Boyle)



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A comet is lighting up Canadian skies over the next few weeks and you won’t need any fancy equipment to catch a glimpse of it.

The C/2020 F3 Neowise comet was discovered back in March. At first only visible in the wee hours of the morning, stargazers will now get a chance to see it in the evening.

Comets are made up of rock, dust, ice and gases from the leftover of the sun over four billion years ago. According to Backyard Astronomer Gary Boyle, they normally live in the deep depths of space however, every once and while one gets thrown into our solar system.

“Once the comet gets to close enough to Mars, the solar influence begins to heat up the surface of the comet, it begins to brighten, to glow. That’s when they’re usually discovered,” Boyle explained. “When it comes really close to the sun, a lot of volatile material is set off such as chemicals and dust and makes a beautiful long tail. That’s what’s happening now.”

Measuring a little more than half the height of Mount Everest, Boyle described Neowise as one of the brightest comets in recent history. He added that it could be at least another two decades before a similar comet passes by Earth and about 6,800 years before Neowise itself returns.

“All the ducks are lined up pretty well for a gorgeous event, it’s summer conditions, people will be camping, the moon will not be interfering. So get out and enjoy this almost once in a lifetime event,” he said.

Chart showing the location of Neowise comet during the month of July (Courtesy Gary Boyle)

According to Boyle, what distinguishes Neowise from the other handful of comets that enter the solar system every year is the fact that it will be visible to the naked eye.

Boyle said astronomers typically observe five to 10 comets per year with the help of telescopes, however, the last bright comet that was visible to the naked eye for the whole world to see was Comet Hale-Bopp back in 1997.

Although no equipment is necessary to see Neowise, Boyle said it’s a perfect chance to capture a comet on film.

“Your DLR cameras, your Canons or your Nikons on a tripod. A very fast ISO or light sensitivity at 3200 and you’d be amazed what just a couple seconds exposure will actually get you,” Boyle said.

Neowise is best seen in the northern evening sky. It will be closest to earth, 103 million kilometres away,  as it makes its way out of the solar system on July 22. For a point of reference, Boyle recommends that people look towards the Big Dipper constellation over the next several days.

“Everyone knows what the big dipper looks like in the northern sky…  so over the next week or so, it will be moving under the big dipper,” he explained.

Boyle added that there are several other celestial events taking place during the dog days of summer, including being able to see Jupiter, Saturn and Mark in the nighttime southeastern sky as well as The Perseids meteor shower in mid-August.