If you’re willing to get up early this week, you’re in for a magnificent sight: an early morning comet.
Comet NEOWISE, named for the space telescope that discovered it on March 27, was at first only visible through powerful telescopes. But it has recently brightened enough to be seen through binoculars.
At the moment it’s only visible in the early morning. But the good news is, this won’t be the case for long.
The comet formally known as C/2020 F3 (NEOWISE) rises in the northeast around 3:30 a.m. local time and climbs until sunrise.
You can find it by looking northeast toward the constellation Auriga.
The comet will eventually sink below the early morning horizon and return to view in the evening sky on July 12 — just after sunset, roughly 10 degrees above the northwest horizon. Look to the bowl of the Big Dipper and follow it toward the horizon.
Over time, the comet will continue rising. On July 20 it will be roughly 20 degrees above the horizon at around 10 p.m., when the sky will be significantly darker, though not completely dark.
There’s a word of warning, however: All this hinges on whether the comet at least maintains its current brightness and stays together.
As comets round the sun, they become brighter as they warm, causing ice to sublimate (going directly from a solid to a gas) and releasing other trapped gases. This is what gives comets their tails.
Comet NEOWISE and the city of Toronto, Ontario, Canada 🍁! I was up really early for this shot. It’s not often that we get the opportunity to see or photograph a comet of this brightness and with a tail. I hope you like it!🤩 <a href=”https://t.co/BFyxFFw2DE”>https://t.co/BFyxFFw2DE</a> <a href=”https://t.co/sGZBiEVryM”>pic.twitter.com/sGZBiEVryM</a>
During the next revolution I tried to capture the C/2020 F3 (NEOWISE) comet a bit closer, the brightest one over the last 7 years. <br><br>Its tail is quite clearly visible from the <a href=”https://twitter.com/Space_Station?ref_src=twsrc%5Etfw”>@Space_Station</a>!<a href=”https://twitter.com/hashtag/ISS?src=hash&ref_src=twsrc%5Etfw”>#ISS</a> <a href=”https://twitter.com/hashtag/comet?src=hash&ref_src=twsrc%5Etfw”>#comet</a> <a href=”https://twitter.com/hashtag/NEOWISE?src=hash&ref_src=twsrc%5Etfw”>#NEOWISE</a> <a href=”https://t.co/FnWkCummD6″>pic.twitter.com/FnWkCummD6</a>
But there’s a chance the warming will cause a comet to break apart, as was most recently witnessed with Comet C/2019 Y4 (ATLAS). That comet was discovered in December 2019 and continued to brighten until March. It then began to dim and was found to have broken apart into more than a dozen pieces.
As for Comet NEOWISE, it will make its closest approach to Earth on July 22 at a distance of 103 million kilometres.
CAPE CANAVERAL, FLA. —
An asteroid the size of a school bus is headed our way, but NASA says the space rock will zoom safely past Earth on Thursday.
The newly discovered asteroid will come within 13,000 miles (22,000 kilometres) of Earth, well below many of the communications satellites orbiting the planet, scientists said this week. The closest approach will occur Thursday morning over the southeastern Pacific Ocean.
Once it’s gone, the asteroid won’t be back to Earth’s neighbourhood until 2041.
Scientists estimate the asteroid is between 15 feet and 30 feet (4.5 metres to 9 metres). By asteroid standards, that’s considered puny. Asteroids of this size hit Earth’s atmosphere and burn up once every year or two, said Paul Chodas, director of the Center for Near-Earth Object Studies at NASA’s Jet Propulsion Laboratory. There could be as many as 100 million of these little asteroids out there.
The real threat are considerably bigger asteroids. The good news is that these are easier to spot much sooner than just a few days out.
Asteroid 2020 SW, as it is known, was discovered last Friday by the Catalina Sky Survey at the University of Arizona in Tucson.
The Associated Press Health and Science Department receives support from the Howard Hughes Medical Institute’s Department of Science Education. The AP is solely responsible for all content.
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