Rare Harvest ‘Micromoon’ Will Appear on Friday the 13th

pattier/iStock via Getty Images
pattier/iStock via Getty Images

The first Friday the 13th of 2019 is coming this September, coinciding with a spooky full moon—and that unlucky event will also be a harvest micromoon, Newsweek reports. Here's everything you need to know about the lunar spectacle.

What is a harvest micromoon?

Harvest moon describes the full moon that appears in September. You may have heard that the harvest moon is larger and deeper in color than full moons that appear at different times of the year, but this isn't the case. The name harvest moon has nothing to do with its size or appearance. Many people observe the harvest moon just as it surfaces above the horizon—the time when it looks biggest due to the moon illusion, and reddish or orange-y through the filter of Earth's atmosphere. But as the moon climbs higher in the sky throughout the night, these characteristics fade away—just as they would at any other time of year.

This year, the harvest moon will actually look smaller compared to other full moons. On Friday, September 13, the celestial body reaches its apogee, or the point in its orbit where it's farthest from Earth. It has been dubbed a micromoon, which is the opposite of a supermoon.

When to see the harvest micromoon

Besides its scaled-down appearance, Friday's moon won't look any different from a regular full moon. But its rare conjunction with Friday the 13th makes it an event that anyone with a superstitious side won't want to miss. The moon will achieve maximum fullness at 12:33 a.m. the morning of Saturday, September 14 in the Eastern time zone (earlier the further west you go), but it will appear full and bright the previous and following nights. To catch the mini-moon on the 13th, look up late Friday night in a place with minimal light pollution. And if you want the full harvest moon effect, look to the horizon just after moonrise at 7:33 p.m.

[h/t Newsweek]

Northern Lights Could Be Visible Over Parts of America This Weekend

Wiltser/iStock via Getty Images
Wiltser/iStock via Getty Images

After giving us some of the best meteor showers and moon events of the year, August is closing with its greatest spectacle yet. As Forbes reports, the northern lights will be visible over several northern U.S. states in the lower 48 this weekend, including Maine, Wisconsin, and Michigan.

What causes the northern lights

The National Oceanic and Atmospheric Administration (NOAA) forecasts G1 and G2 geomagnetic storms for August 31 and September 1, 2019. The aurora borealis is caused by solar particles colliding with gas molecules in the atmosphere. As electrons from the sun come in contact with oxygen and nitrogen, they transfer some of their energy to the gases. The colorful ribbons of light we observe from the ground are these molecules calming down and releasing photons into the sky.

Normally the phenomenon is only visible at northernmost latitudes where the Earth's magnetic field, and therefore levels of solar energy, are strongest. But the upcoming geomagnetic storm is expected to hit the Earth with a concentrated dose of solar particles, potentially causing the northern lights to appear farther south than usual.

Where and when to see the northern lights

The first solar storm of the weekend is predicted for Saturday, August 31, and the second is expected to reach Earth on Sunday. If these forecasts are correct, states spanning the U.S.-Canada border are in for a treat. Washington, Idaho, Montana, North Dakota, South Dakota, Minnesota, Wisconsin, Michigan, and Maine all fall within the light show's projected path.

As is the case with any nighttime spectacle, the best time to catch the northern lights is when skies are darkest. That means waiting until late at night or early in the morning to look up, and finding a spot that isn't washed out by light pollution is key. Luckily, the solar storms are following the super new moon on August 30, so skies will be especially dark this weekend.

[h/t Forbes]

August Is Ending With a Super New Moon

Allexxandar/iStock via Getty Images
Allexxandar/iStock via Getty Images

Look up early in the morning of Friday, August 30, 2019, and you won't see anything but an especially dark sky. That's because the moon is entering the "new" phase of its cycle, meaning it's not visible to the naked eye. Even though you can't see it, this upcoming super new moon marks one of the biggest lunar events of the year, and its effects on the tides will be felt around the world, Forbes reports.

What is a super new moon?

The moon follows a 29.5-day lunar cycle, starting with a new moon and ending with a full moon. As the body orbits the Earth, it moves in and out of our planet's shadow, appearing more or less visible each night. A new moon occurs when the moon falls between the Earth and the sun and its near side is totally dark.

New moons happen regularly, but this upcoming event is special. It's also a supermoon. A moon becomes "super" when it reaches its perigee, or the point in its orbit closest to Earth. On Friday night, the supermoon and the new moon will coincide.

Typically, supermoons are a chance to see the moon at its largest in the night sky, but that won't be the case this week. The super new moon will make its presence known in other ways. Tides are always strongest when the moon is closest to Earth. When the moon enters its new phase, it will have the extra gravitational pull of the sun literally backing it up, resulting in super-charged "king" tides across the half of the Earth it's facing. The teamed-up forces of both celestial bodies will be so strong that the normally placid River Severn in the UK could flow backwards and see 32-foot waves.

When is the super new moon?

The new moon will reach its darkest stage at 6:37 a.m. EST on Friday, August 30. If you go out expecting to see the moon, you'll be disappointed, but the dark sky will create optimal conditions for stargazing. Here are some of the best places on Earth to look at the stars.

[h/t Forbes]

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