Look Up! 3 Celestial Events to Watch This October

Marco Bertorello, Getty Images
Marco Bertorello, Getty Images

October is always a great month for skywatching, because you get two strong meteor showers and a distant planet desperate for viewing. Events toward the end of the month will be especially stunning as the Moon will offer virtually no interference. If you’ve ever wanted to get into skywatching, this is your chance. Set your alarm, look up, and keep your eyes peeled for these events.

1. THE DRACONIDS METEOR SHOWER RETURNS.

This weekend the Draconids meteor shower reaches its peak, and while it is not expected to be a beast—count on 10 meteors or so per hour—it can sometimes go full Smaug and lay devastation to the skies. In 2011, there were hundreds per hour—a veritable fusillade of shooting stars. So many rained down that NASA had to evaluate the safety of its orbital assets. Don’t expect the Hubble Space Telescope to be destroyed this year, though. (Sometime in the 2030’s, however, that's pretty much guaranteed to happen as atmospheric drag finally prevails.)

The Draconids are the product of comet 21P/Giacobini-Zinner, a periodic comet that leaves behind a field of debris as it travels along its 6.6-year orbit. Meteors are produced not by massive chunks of decaying space rock, but rather, specks of dust (and sometimes sand) that collide with the atmosphere at tens of thousands of miles per hour. That kind of speed releases some serious energy, and the bright streaks that course across the sky are the lovely result.

Incidentally, the NASA International Cometary Explorer spacecraft visited 21P/Giacobini-Zinner in 1985 and crossed through its tail. If you lack a personal spacecraft, the best time to view the Draconids this year will be just after nightfall on the evenings of October 7 and 8.

2. URANUS IS AT ITS BRIGHTEST.

Let’s get this out of the way right now: unless you really know what you’re doing, you probably won’t be able to spot Uranus with your telescope. The circumstances required to glimpse it are so remote and challenging as to be basically impossible. There should be zero light pollution. The Moon should be new, or just a sliver. And you need to know what you’re looking at, which is probably the hardest part. I’m not saying don’t bother, but I am suggesting that you prepare yourself for disappointment. The sky gives, but it doesn’t give easy.

On the evening of October 19, Uranus reaches opposition. This means that it is on the opposite side of the Earth as the Sun, and thus is in full illumination. Good news: it’s not just the Sun and Uranus doing their part. On October 19, we will have a new Moon. It will be black in the evening sky, reflecting none of its glow down onto Earth below. These conditions are just phenomenal for a rare and extraordinary celestial event.

So what are you looking for? Someone who knows what they are doing! Seek out your local astronomy club and find out if they have organized a viewing. Short of this, get thee to the most remote, lightless area you can find. Here's a quick way to judge a potential viewing area in keeping with this month's Halloween spirit: are you afraid of being axe-murdered by a ghost? If so, then it’s dark enough.

Around 8 p.m. EDT, look east. Uranus will cross the celestial dome from east to south, rising in the sky from about 20 degrees over the horizon to just under 70. Again, this planet is 1.7 billion miles from Earth. Even on this, the best viewing night of the year, seeing it is a tall order. Seek out the experts for your best chance of spotting it.

3. ORION EXPLODES.

The Orionids is the second of two meteor showers caused by the debris field left by the comet Halley. (They showers are named for the constellation Orion, from which they seem to originate.) Like Uranus above, all the stars are lining up, so to speak, for this show. First, it’s on a weekend. That means you can stay up late without feeling the burn at work the next day: the shower peaks just after midnight on Saturday, October 21 leading into Sunday morning. (You can also make a picnic of the occasion, because it takes about an hour for your eyes to adjust to the darkness. Bring a blanket and a bottle of wine, lay out and take in the open skies, and let nature do the rest.)

Second, the Moon, which was new only two days earlier, is but a sliver in the evening sky, lacking the candle-wattage to wash out the sky or conceal the faintest of meteors. If your skies are clear and light pollution low, this year you should be able to catch about 20 meteors an hour, which isn’t a bad way to spend a date night.

If clouds interfere with your Draconids or Orionids experiences, don’t fret: there will be two more meteor showers next month, leading into the greatest of them all: the Geminids in December.

A Snow Moon—the Year’s Brightest Supermoon—Will Be Visible Next Week

iStock.com/jamesvancouver
iStock.com/jamesvancouver

Save the date: The next supermoon is set to light up skies on Tuesday, February 19. Because of when it's arriving, the event will also be a snow moon—a type of full moon that can only been seen this time of year, USA Today reports.

What is a supermoon?

A supermoon occurs when the moon is at its largest in the night sky. That means the Moon is not only full, but also at the point in its orbit that brings it closest to Earth—a position called perigee. On Tuesday, the Moon will appear 14 percent larger and 30 percent brighter than when it's farthest from our planet, making it the brightest supermoon of 2019.

This next supermoon will also have a fun nickname that fits the season. The full moon of each month has a special name. A harvest moon, the first full moon of September, is the best-known moniker, but there are also strawberry moons (June), sturgeon moons (August), and so on. A snow moon is the name for the full moon in February, alluding to February being the snowiest month of the year in the U.S.

When to watch the next supermoon

If the weather is clear in your area, the best time to see the super snow moon is early Tuesday morning on February 19, when the moon reaches its perigee. The Moon will become officially full six hours later at 10:53 a.m. EST. Sunday, Monday, and Tuesday nights will also offer spectacular views of a seemingly huge, nearly full moon.

Supermoons usually happen just a few times a year, but skygazers won't have to wait long for the next one: There's a super worm moon coming March 21, 2019.

[h/t USA Today]

11 Photos From the Opportunity Rover's Mission on Mars

NASA
NASA

In 2004, the rover Opportunity landed on Mars. Originally intended to serve a mere 90-day mission, the rover instead beamed back scientific discoveries for 15 years. But since a massive dust storm in 2018, the rover Opportunity ceased sending data—and now, NASA has declared its groundbreaking mission complete. (Its twin rover, Spirit, ended its mission in 2011.) Opportunity is the longest-serving robot ever sent to another planet. Let's celebrate Opportunity's Mars mission with a look at the images it captured.

1. Opportunity rover gets its first 360° shot.

Rover Opportunity's 360° photo of Mars
NASA/JPL/Cornell 

This 360° panorama, comprised of 225 frames, shows Mars as it was seen by the Opportunity rover on February 2, 2004. You can see marks made by the rover's airbags, made as Opportunity rolled to a stop. Here's a larger version of the photo.

2. Opportunity rover finds a meteorite.

Opportunity rover's photo of a meteorite on Mars
NASA/JPL/Cornell

This meteorite, found by Opportunity on January 19, 2005, was the first meteorite ever identified on another planet. The rover's spectrometers revealed that the basketball-sized meteorite was composed mostly of iron and nickel.

3. Opportunity rover shoots the Erebus Crater and drifts.

Opportunity rover's photo of Erebus craters and drift
NASA/JPL-Caltech/Cornell

On October 5, 2005—four months after Opportunity got stuck in an area NASA nicknamed "Purgatory Dune"—the rover skirted wind-deposited drifts in the center of the Erebus Crater, heading west along the outcrop (the light-toned rock) on the crater's rim, and snapped this photo with its PanCam.

4. Opportunity rover captures Martian rock layers.

Opportunity rover's photo of layers on Mars
NASA/JPL/Cornell

Located on the western ledge of the Erebus Crater, this ledge—called "Payson"—has a diverse range of primary and secondary sedimentary layers formed billions of years ago. According to NASA, "these structures likely result from an interplay between windblown and water-involved processes." Opportunity snapped this photo on April 5, 2006.

5. Opportunity rover comes to Cape Verde.

Opportunity rover's photo of Cape Verde
NASA/JPL-Caltech/Cornell

On October 20, 2007, Opportunity celebrated its second Martian birthday (one Martian year = 687 Earth days) by snapping this photo of Cape Verde, a promontory that juts out of the wall of the Victoria Crater. Scattered light from dust on the front sapphire window of the rover's camera created the soft quality of the image and the haze in the right corner.

6. and 7. Opportunity rover is hard at work on Marquette Island.

Opportunity rover's photo of Marquette Island
NASA/JPL-Caltech

This photo shows Opportunity approaching a rock called "Marquette Island" on November 5, 2009. Because its dark color made it stick out, the rover team referred to the rock—which investigations suggested was a stony meterorite—as "Sore Thumb." But it was eventually renamed, according to NASA, using "an informal naming convention of choosing island names for the isolated rocks that the rover is finding as it crosses a relatively barren plain on its long trek from Victoria Crater toward Endeavour Crater."

On November 19, 2009, the rover used its rock abrasion tool to analyze a 2-inch diameter area of Marquette, which scientists called "Peck Bay."

8. Opportunity rover encounters SkyLab Crater.

Opportunity rover's photo of SkyLab Crater
NASA/JPL-Caltech

Opportunity snapped a photo of this small crater, informally called Skylab, on May 12, 2011. Scientists estimate that the 30-foot crater was formed within the past 100,000 years. Click the photo for a larger version. You can also see the crater in stereo if you have a pair of anaglyph glasses!

9. Opportunity rover sees its shadow.

Opportunity rover's selfie
NASA/JPL-Caltech

On its 3051st day on Mars (August 23, 2012), Opportunity snapped this photo of its own shadow stretching into the Endeavour Crater.

10. Opportunity rover sees its first dust devil.

Opportunity rover's photo of a dust devil
NASA/JPL-Caltech/Cornell University/Texas A&M

Though its twin rover, Spirit, had seen many dust devils by this point, Opportunity caught sight of one for the first time on July 15, 2010.

11. Opportunity rover snaps a selfie.

Opportunity rover's self-portrait
NASA/JPL-Caltech/Cornell University/Arizona State University

A girl sure can get dusty traversing the Martian plains! Opportunity snapped the images that comprise this self-portrait with its panoramic camera between January 3 and January 6, 2014, a few days after winds blew off some of the dust on its solar panels. The shadow belongs to the mast—which is not in the photo—that the PanCam is mounted on.

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