Category Archives: Astronomy News

Looking Up! (Post Script)

Space Weather News for Oct. 24, 2015

http://spaceweather.com

3 planets
The morning planet show is a worldwide event. Pictured above is the view from Yading, China (credit: Jeff Dai).

Do not hamper your blood vessels by smoking; just find ways on how to get rid of smoking. cialis viagra canada It is important that we do what we think of toxic assumptions about the relationship of inventory. cialis 60mg There are buy cialis cialis some disadvantages however, generally hair loss and it does play a part in woman’s hair loss, so reducing how much dht is produced would be beneficial. Here is the mechanism what happens with reproductive health when an individual suffers from male impotence or erectile dysfunction or ED. levitra prescription CME IMPACT:  Arriving earlier than expected, a CME hit Earth’s magnetic field on Saturday, Oct. 24th. Solar wind speeds abruptly jumped to more than 500 km/s as the CME passed by. The shockwave rattled Earth’s magnetic field and caused electrical currents to flow through the ground of Norway’s Lofoten islands.  A full-fledged geomagnetic storm did not erupt, and few auroras have been reported. Why was the CME so ineffective? Its internal magnetic field did not connect to Earth’s magnetic field; the mismatch mitigated the CME’s impact.

MORNING SKY SHOW:  Set your alarm for dawn. Venus, Jupiter and Mars are gathering for a three-way close encounter in the early morning sky. Sky maps and observing tips are available on today’s edition of  http://spaceweather.com

From Oct. 25th to Oct. 29th Venus, Jupiter and Mars will fit together inside a circle only 5o wide (sky maps: #1, #2, #3, #4, #5). Super-bright Venus and Jupiter are visible even after the black pre-dawn sky turns cobalt blue. Once you find them, you will have little trouble locating the dimmer red planet Mars.

Looking Up!

Robot looks upAn Exceptional Solar Flare:  Typical solar flares are finished in a matter of minutes. On Oct. 22nd, a solar flare in the magnetic canopy of sunspot AR2434 lasted for more than 3 hours. NASA’s Solar Dynamics Observatory recorded the eruption.

The CME is not heading directly for Earth. Nevertheless, it does have an Earth-directed component. NOAA forecast models suggest that the cloud will deliver a glancing blow to our planet’s magnetic field on Oct. 25th. There is a 50% chance of G1-class geomagnetic storms when it arrives, so watch for potential auroras on the weekend.  More information, including video of the flare: http://spaceweather.com/

Potentially Hazardous Asteroids (PHAs) are space rocks larger than approximately 100m that can come closer to Earth than 0.05 AU. None of the known PHAs is on a collision course with our planet, although astronomers are finding new ones all the time. On October 23, 2015 there were 1630 potentially hazardous asteroids.

The Moon is at perigee, Monday, October 26, 9 a.m. EDT.  The Moon will be at its closest to the Earth this month. Expect high tides for the next four days.  Full moon, Tuesday, October 27, 8:05 a.m. EDT. The October Full Moon is known as the Hunter’s Moon.  Thursday, October 29, 8:30 p.m, the Moon passes close to Aldebaran, the eye of the bull, Taurus.

Urthecast and NASA bring you live, high definition video from the ISS. Perched 250 miles (400 km) above Earth’s surface are four high-definition cameras that capture video of our planet from four unique angles. You’ll see storms swirl over the oceans, watch the sun rise and set 16 times a day, and experience the blue marble as it rolls beneath the ISS.   https://www.urthecast.com/live  

You have to be patient–bookmark the site and check in often because when the ISS is on the night side, the screen of course is black. That’s a good time to view the gallery.

A Comet, an Asteroid, and a KBO

The ESA’s Rosetta and Philae observe a comet
The ESA’s Rosetta has been sending home images of comet 67P/Churyumov–Gerasimenko, AKA the Rubber Ducky. The odd shape of the comet was quite a surprise to scientists, and a hurdle for the landing of Philae.

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Rosetta_s_comet_node_full_image_2“By using high-resolution images taken between 6 August 2014 and 17 March 2015 to study the layers of material seen all over the nucleus, they have shown that the shape arose from a low-speed collision between two fully fledged, separately formed comets. “

READ More about the shaping of the Rubber Ducky
Approaching_perihelion_AnimationAt perihelion, it is estimated that Comet 67P/Churyumov–Gerasimenko, was spewing out up to 300 kg of water vapour & 1000 kg of dust per second.
READ More about Rosetta at  perihelion
 NASA’s Dawn reveals more about our largest asteroid, Ceres.
Ceres
Click to view larger image.
New Horizons to image a KBO  (Maybe)
The next  flyby will explore an ancient, intermediate-size Kuiper Belt Object (KBO) called 2014 MU69

BUT

“This flyby is contingent on NASA approving and funding a 4-year extension to the New Horizons mission — a decision planned for late summer 2016 (about when the last of our Pluto data reaches Earth)”

READ More about this mission’s goals

New images of Pluto’s Moon, Charon

A fresh batch of high-resolution images from NASA’s New Horizons spacecraft shows that Charon, Pluto’s largest moon, has endured a lot.

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Charon-Neutral-Bright-Release“It looks like the entire crust of Charon has been split open,” observes John Spencer (Southwest Research Institute), who serves as deputy lead for the mission’s geology, geophysics and imaging team. Such wholesale extension might have occurred, the New Horizons team speculates, if Charon once had an interior ocean of water that expanded as it froze long ago. The overlying crust would have cracked wide open to accommodate the increased volume.

Mars, Attainable Goal?

From the Planetary Society,

report-dlWe’ve released a report—written for anyone to read— which highlights the major points of discussion from our workshop, and includes details on the orbit-first plan and its potential for science, public outreach, and affordability. You can download, read, and share it for free.

http://hom.planetary.org/

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And by now, you must have heard of the movie, unless you have been living under a rock. It’s making waves, not only for the quality of the movie, but also for the astronomical correctness. Even Astronomy Magazine carried an article about it, calling it “a love letter to science.”  http://www.foxmovies.com/movies/the-martian

 

Lunar Eclipse Sept 27

What’s so special about this lunar eclipse?

Not much, for astronomers, but  for the rest of us it promises a fine spectacle with a cool WOW factor. Usually, an eclipsed moon  appears blood red, but depending on the pollution in the atmosphere, the moon may appear brownish, or even bluish-grey.

Telescopes are not necessary, but binoculars will bring out a lot of detail as the shadow of the earth passes over the craters.

The moon is at perigee, so it will appear slightly larger than usual, it’s the Harvest Moon, and because of optical illusion, it appears even larger on the horizon as it rises. You will not notice much difference from one night to the next, but from Apogee to Perigee, the difference is dramatic. 

The Sept. 27 event is therefore being called a “supermoon eclipse.” The last such eclipse happened in 1982, and the next won’t occur until 2033.

This eclipse is the last of the current Tetrad, a series of 4 eclipses, each pair separated by 6 months.

In Montreal, we get to see the whole celestial show , just a little over 5 hours.

Begins at 8:11

Max totality at 10:47

Ends at 1:22 AM

Duration: 5 hours, 11 minutes

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Looking up!

  1. Observing highlights for the week of September 25 to October 3 PlanetsEarly risers get to see 3 planets and Regulus, the heart of the Lion, all in a line this week, an hour before dawn.

Click here to see more

2)The weather prediction for Sunday’s lunar eclipse of the Harvest Moon is looking better. The sky should be clear, temperature dropping from the daytime high of 24C to 9C.

Here is a different lunar eclipse, seen from a Mars Rover Aug. 20, 2013 :

PhobosEclipse-630x210Phobos,  directly in front of the sun as seen by NASA’s Mars rover Curiosity. It is, of course, an annular eclipse as Phobos is way too small to totally eclipse the sun.

 

 
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3) More high resolution images are coming down from Pluto:

1_snakeskin_detailDetails and more images here

 

 

4) Curiosity is still roving, still sending home wonderful images of Mars.

MartianPetrifiedSandDunesDozens of individual Mast Camera images taken on August 27, 2015, were combined to create this panorama.

Read more

Lunar Eclipse Sept 27

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http://www.skyandtelescope.com/observing/celestial-objects-to-watch/observing-and-photographing-lunar-eclipses/

Total Lunar Eclipse Sept 27

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http://www.space.com/30546-supermoon-blood-moon-total-lunar-eclipse.html

Two events on the weekend

Saturday, September 26

CAFTA: A telescope making competition being held in Dorval this year. http://www.astrosurf.com/cdadfs/cafta.html

Sunday, September 27

Viewing of the Lunar Eclipse
Sunday, Sept. 27th,  at 8PM

http://www.rascmontreal.org/moon/

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Morgan Arboretum, Ste-Anne-de-Bellevue

Andrew Fazekas (The Night Sky Guy) will give a short presentation before viewing the eclipse.

Bring a lawn chair and sit back to enjoy the show. Telescopes and the Bellvue Observatory will be available for viewing.

*Donations will be kindly accepted