Posts Tagged ‘NASA’

Look up for the best meteor shower this year

Perseid Meteor Shower peaks August 12 and 13 in 2018. (NASA photo)

Perseid Meteor Shower peaks August 12 and 13 in 2018. (NASA photo)

 

Don’t bother calling NASA or the local police if you see a fireball during pre-dawn hours this weekend through Monday.

The Perseid meteors are already zooming across the sky but they peak after midnight from August 12 to 13.

This year, 2018, the meteors should be easily seen because the moon is in its new phase Aug. 11, and only a mere waxing crescent Aug. 12 and 13 (Sunday-Monday) which means its illumination is too low to interfere with shining meteors streaking overhead.

However, to best spot them, seek out areas away from street and commercial lights, oh, and be patient. There should be 60 to 70 meteors flying overhead per hour.

The Perseids are pieces from the Comet Swift-Tuttle that we can view when the earth passes through its path. Although it does so mid-summer from July 17 to Aug. 24, the densest pass-through is Aug. 12.

As to fireballs, NASA experts say the Perseids have more than other big meteor showers.  For more NASA meteor information visit NASA Perseids.

Another good meteor information site is Earthsky.

Happy watching

Jodie Jacobs

 

The Draconids are here whether you see them or not

 

Look up tonight, Oct. 7 and tomorrow Oct, 8 to try to catch the Draconid meteor shower.

Typically this meteor shower does not fill the sky with what some folks call “shooting stars” but some years it can be spectacular.

Meteor shower. (NASA photo)

Meteor shower. (NASA photo)

The meteors emanate from the Draco the Dragon constellation.

Sky watchers know it was fun to see in 2011 when more than 600 meteors shot out from the Dragon per hour.

Watch for them after the sun sets.

However, if clouds don’t interfere then the light from the waning gibbous moon, still about 75 percent glowing following the very recent full harvest moon, might make the meteors harder to see.

Best plan is to go somewhere without street or city lights as soon as suitably dark, then look north.

The later it is in the night when the moon is high and bright, the harder it will be to catch a “falling star.”

The Draconid meteors, also called the Giacobinids, happen when the Earth’s orbit has it colliding with debris from the comet 21 P/ Giacobini-Zinner.

The comet’s orbit is 6.5 years long so this year may be the next good year since 2011.

To learn more about the Draconids vist Earthsky.  To learn more about meteors and how to watch them visit NASA.

Good luck

 

 

 

 

See Harvest Moon on Thursday

Watch for Harvest Moon. (Jodie Jacobs photo

Watch for Harvest Moon. (Jodie Jacobs photo

If in Chicago, rain or cloudy skies may prevent you from seeing the Harvest Moon Oct. 5, but if you are elsewhere in the Northern Hemisphere you should be able to see what looks like a large, orangey-toned impressive orb. (The moon also looked impressive Chicago Oct. 4 when the weather cleared).

It’s dubbed the Harvest Moon because it is the full moon closest to the autumn equinox when farmers enjoy more moonlight to finish harvesting their crops.

That’s because even though the moon typically rises 50 minutes later each fall and winter day, the moon’s orbital path is narrower in the Northern Hemisphere near the autumn equinox. That orbit makes it rise only about 35 minutes later each day.

BTW, the orange color is noticed when seeing the moon through the Earth’s atmosphere near the horizon. The moon also looks larger from that angle.

For more info please visit Earth Sky or Almanac or Science NASA.

 

 

 

 

Save eclipse glasses for next big solar event

 

The next time a total solar eclipse crosses the United States isn’t that far off. It’s April 8, 2024

Floor map of eclipse paths at the Adler Planetarium. Jodie Jacobs photos

Floor map of eclipse paths at the Adler Planetarium. Jodie Jacobs photos

If you didn’t have a chance to experience totality on Aug. 21, 2017 you might want to plan where you want to see it next time. Even if you don’t go you might know someone who will. So save those eclipse glasses if lucky enough to have a pair.

Carbondale, IL will again be dead center when the eclipse path crosses the United States. But the path of the 2024 total solar eclipse will cut the opposite direction. It will go from Mexico in the southwest to Maine in the northeast as it moves across Texas, Arkansas, Indiana, Ohio, New York and Vermont.

Consider then, taking a spring vacation in Austin or Dallas Texas, Indianapolis, Toledo or Cleveland, Ohio or the Buffalo, Niagara Falls area or even Montreal. Chicago won’t be in the direct total solar eclipse path until Sept. 14, 2099.

To go now to walk across the map visit Adler Planetarium’s “Chasing Eclipses” exhibit. It has a terrific floor map of the total solar eclipse path for 2017, 2024 and 2099.

The Adler also has a total solar eclipse experience at one end of the exhibit complete with cooler air, expected sounds and a good visual eclipse.

 

Why experience totality

The following quote from Adler Astronomer Larry Ciupik, the Doane Observatory director,  describes what he saw in Capo San Lucas, Mexico July 1991.

“It didn’t matter how much I knew about it or prepared for it, my first total solar eclipse was unexpected and unlike anything I’ve ever seen!” Ciupik said on an Adler web site.

He went on to explain. “In the last few seconds before totality, the sky darkened to a deep blue, then purple, and faint wavering lines appeared—shadow bands—whisking across the sand of our beachside site. Suddenly, the Sun itself dramatically changed. I took off my special solar viewing filter and saw what looked like a hole in the sky surrounded by a pearlescent glow. The Sun’s outer atmosphere, the corona, resembled outstretched wings several times wider than the hole on each side.”

Also, totality will last longer on its path. It will range from three minutes plus seconds to four minutes plus seconds over most of the United States in April 2024 instead of the two minutes plus seconds it did  in August 2017.  For the 2024 path click here and at Time and Date.

The Adler Planetarium's "Chasing Eclipses" exhibit simulates a total solar eclipse that includes the cooling air and sounds. Jodie Jacobs photos

The Adler Planetarium’s “Chasing Eclipses” exhibit simulates a total solar eclipse that includes the cooling air and sounds. Jodie Jacobs photos

 

Checking locations

To figure the time of the eclipse in the city you want to visit check its latitude and longitude then go to NASA Path.

The information is thanks to NASA and Fred Espenak.  The numbers are in Universal Time so for central daylight time subtract 5 hours and eastern daylight time subtract 4 hours.

Another good resource is Earth Sky. For another map of eclipses see EarthSky Essentials.

 

Adler Exhibit

“Chasing Eclipses”is up now through through Jan. 8, 2018. The Adler Planetarium is on the Museum campus at 1300 South Lake Shore Drive Chicago, IL 60605. For ticket and other information visit Adler Planetarium and call (312) 922-7827.

 

 

 

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