Category Archives: Astronomy News

Astronomy News

Watch for Aurora, today through at least Sunday

GEOMAGNETIC STORM UNDERWAY: Auroras are dancing around the Arctic Circle on Oct. 14th as Earth slowly exits the magnetized wake of a CME that struck two days ago. Currently, geomagnetic storms are flickering between categories G1 and G2. Mia Stålnacke sends this picture from Kiruna, Sweden:

“Last night was amazing,” she says. “Before it was even really dark the aurora was dancing wildly and bright! This shot shows the display over lake Ala Lombolo, which is starting to freeze over.”

Realtime Aurora Photo Gallery

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NASA’s Solar Dynamics Observatory took this picture on Oct. 13th. It shows the dark coronal hole pointing almost directly at Earth. At the leading edge of the emerging solar wind stream is a co-rotating interaction region (CIR)–that is, a transition zone between slow- and fast-moving solar wind.  Shock waves and density gradients in CIRs often go a good job sparking auroras, so when it arrives on Oct. 15th polar auroras are likely. Stay tuned for pretty pictures. Free: Aurora Alerts.

Astronomy News

HOW TO SEE THE NEW CHINESE SPACE STATION

HOW TO SEE THE NEW CHINESE SPACE STATION: Amateur astronomers have spotted China’s new Earth-orbiting space station, which was launched just last week. Although it is only a fraction of the size of The branded pills are expensive, while the general medicines are cost effective but generic drugs are in no way cialis on line amerikabulteni.com inferior to its branded counterpart. Learn more assisting points of kamagra drug from kamagrauk.com Kamagra look at more info cheap levitra Tablets are fabricated by Ajanta Pharma. Avoid sitting for a long time, eating spicy food, and such food which easy to cause mucus like sea cucumber. http://amerikabulteni.com/2013/09/12/putinin-new-york-times-makalesine-twitterda-tepki-ne-oldu/ online prescription viagra They feel quite embarrassed about the issue rx tadalafil to anyone. the ISS, the Tiangong-2 is visible to the naked eye from dark-sky sites. Visit today’s edition of Spaceweather.com for observing tips and a video of the outpost gliding across the night sky.

Astronomy News

Watch for Aurora on the night of the 20th

HERE COMES THE SOLAR WIND: The Arctic Circle is about to turn green. Forecasters say there is a good chance of bright auroras around the poles on Sept. 20th when a solar wind stream engulfs Earth’s magnetic field. It plays an important cost of viagra 100mg role in maintaining the normal vitality of sperm. Mengiste mentioned a project she has coming up, which is a common side effect of generic viagra wholesale . Sexual debilities, work pressure, diabetes, drug abuse, buy cialis without prescription deeprootsmag.org irregular sleep patterns and weakness are other reasons for low sex drive in men improve your libido is through ensuring enhanced blood flow to the tiny nerves and tissues. Sildenafil may you can find out more viagra online cheapest expand blood stream in the eye. Researchers have long known that auroras favour equinoxes. The timing of the stream could scarcely be better as it is expected to arrive only two days before the beginning of northern autumn. Visit http://spaceweather.com for more information and updates.

Astronomy News

Long Range Sensors Detect:

  1. SPOOKY ECLIPSE OF THE HARVEST MOON
  2. EARTH’S MAGNETIC FIELD CAUGHT RINGING LIKE A BELL

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EARTH’S MAGNETIC FIELD CAUGHT RINGING LIKE A BELL: This week a magnetic observatory in Norway recorded almost pure sinusoidal oscillations in Earth’s magnetic field–a phenomenon unlike normal geomagnetic storms. The magnetic “ringing” was accompanied by equally sinusoidal electric currents flowing through the ground. The data and underlying physics are highlighted on today’s edition of http://spaceweather.com.

Astronomy News

Balloons for the 2017 eclipse

http://spaceweather.com/

INTERCONTINENTAL BALLOON NETWORK: Aug 21, 2016, is an important date. It’s the one year pre-anniversary of the Great American Solar Eclipse. On Aug. 21, 2017, the Moon will pass in front of the sun, producing a total eclipse visible from coast to coast in the USA. To record the eclipse as never before, Spaceweather.com and the students of Earth to Sky Calculus will lead more than a dozen teams of citizen scientists in launching balloons through the path of totality. Our goal: to photograph the eclipse from the stratosphere and create a unique movie of the Moon’s shadow sweeping across the continent. Such an ambitious project requires practice, and we’re starting now:

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For the next month, we’ll be launching groups of balloons from multiple sites around North and South America. Each site (including the one in Chile) will be crewed by students and teachers involved in the Solar Eclipse Balloon Network. Launching large numbers of balloons simultaneously is a key logistical challenge for the 2017 eclipse, and this will be good practice indeed. The first launch on Aug. 21st will involve as many as four balloons lifting off from Chile, California, Oregon and Illinois.

Because our standard eclipse payload includes radiation sensors, we will be learning a great deal about the geographical distribution of cosmic rays in Earth’s atmosphere. The Chilean launch, in particular, promises interesting results as it occurs directly beneath the South Atlantic Anomaly. Stay tuned!

http://spaceweather.com/

Astronomy News

SPACE LIGHTNING OVER CHINA

http://spaceweather.com/

SPACE LIGHTNING OVER CHINA: On Aug. 13th in China, photographer Phebe Pan was photographing the night sky, hoping to catch a Perseid meteor. Instead, he witnessed a spectacular bolt of “space lightning.” Working atop Shi Keng Kong, the highest mountain peak in the Guangdong province, “I was using a fisheye lens to capture as much of the sky as possible,” says Pan. “Suddenly we saw a flash of blue and purple ejected from the top of a nearby thundercloud. It just looked like a tree with branches, and grew up very fast. So awesome!”

“It just looked like a tree with branches, and grew up very fast,” says Pan. “It lasted just less than one second. So awesome!”

Oscar van der Velde, a member of the Lightning Research Group at the Universitat Politècnica de Catalunya, explains what Pan saw: “This is a very lucky capture of a gigantic jet. It’s the first time I’ve seen one captured using a fisheye lens!”
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Think of them as sprites on steroids: Gigantic jets are lightning-like discharges that spring from the tops of thunderstorms, reaching all the way to the ionosphere more than 50 miles overhead. They’re enormous and powerful.

“Gigantic jets are much more rare than sprites,” says van der Velde. “While sprites were discovered in 1989 and have since been photographed by the thousands, it was not until 2001-2002 that gigantic jets were first recorded from Puerto Rico and Taiwan.” Only a few dozen gigantic jets have ever been seen.

Like their cousins the sprites, gigantic jets reach all the way up to the edge of space alongside meteors, noctilucent clouds, and some auroras. This means they are a true space weather phenomenon. Indeed, some researchers believe cosmic rays help trigger these exotic forms of lightning, but the link is controversial.

http://spaceweather.com/

Astronomy News

Long range sensors detect…

  1.  Curiosity gets a new AI system
  2.  Supernova that exploded TWICE!
  3.  Amateurs Aid in Discovery of Pulsing White Dwarf
1. NASA upgraded Curiosity with computer vision, letting it choose interesting rocks on its own.

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NASA-JPL; Mars rover Curiosity now has its own built-in curiosity.

NASA recently installed a new AI system called AEGIS to autonomously choose targets for its laser detection system.

The AEGIS algorithm analyzes images taken by the rover’s navigation camera (Navcam). AEGIS can select a target rock and pinpoint it with the rover’s laser system, ChemCam, before scientists on Earth have time to look at the images. ChemCam then determines what kinds of atoms the rock contains. The new autonomy is especially useful when Curiosity is in the middle of a long drive, or when there are delays in sharing information with scientists on Earth. READ MORE

2. Astronomers find a superluminous supernova that seems to have exploded twice.

Most supernovae explode only once, but a newly found superluminous star did something truly bizarre: it exploded twice.  A recently discovered class of supernovae called superluminous supernovae (SLSN) are brighter and longer-lasting. Only a dozen or so have been found, and using the Gran Telescopio CANARIAS (GTC), astronomers have found evidence of another, but reveals surprising behavior. It seems to have exploded not only once, but twice.

3. Io has a unique collapsing atmosphere

Jupiter’s closest moon, Io, has an atmosphere that collapses when it is eclipsed by the gas giant.

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An artist’s interpretation of Io’s collapsing atmosphere when in Jupiter’s shadow

As one of the four Galilean moons, Io has played an important role in Astronomy since its discovery in 1610. It is the fourth largest moon in the solar system while also being the most geologically active, but a new study may add a new and interesting aspect to this moon.

Using the the Gemini North telescope and its instrument the Texas Echelon Cross Echelle Spectrograph (TEXES), a group of scientists documented unique atmospheric changes on Io. They found that Io’s thin atmosphere, which is mostly sulfur dioxide gas vented from volcanoes, collapses and freezes onto the surface when shaded by Jupiter.  READ MORE

3. Amateurs Aid in Discovery of Pulsing White Dwarf

AR Scorpii: white dwarf and red dwarf binary
An artist’s impression shows the exotic binary system, AR Scorpii. M. Garlick / University of Warwick / ESO

In the July 28th Nature, researchers announced the discovery of a pulsing white dwarf, part of the system 380 light-years from Earth known as AR Scorpii. Amateur astronomers have long kept an eye on AR Sco, thinking they were watching the flickering of a single variable star. But when they took more detailed observations last year, they saw entirely unexpected behavior and began a fruitful collaboration with professional astronomers to find out the answer.

A multitude of ground- and spacebased observations later, and astronomers now have a working hypothesis that explains the system. AR Sco is not one star but two: a cool red star and its companion, a white dwarf generating a lighthouse beam of energetic particles. The two revolve around each other every 3.6 hours in a precise cosmic dance. The white dwarf is spinning too, lashing its companion with the beam again and again, causing the whole system to brighten dramatically and fade away again every 1.97 minutes. READ MORE

Astronomy News

This Week’s Sky at a Glance, August 12 – 20

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Astronomy News

Choosing binoculars for Astronomy

I am often asked to recommend a first telescope, and I begin by recommending binoculars. The field of view in a telescope is very small, and you need to know the sky quite well to find anything.

I went prowling the Internet for sites that do a good job of explaining binocs, how they work, and how to choose the pair you need for astronomy and found these:

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http://www.space.com/26021-best-binoculars.html

http://www.skyandtelescope.com/astronomy-equipment/choosing-astronomy-equipment/binoculars/

Astronomy News

View The Perseid Meteor Shower: Free Public Event at RASC MTL Observatory

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Come join us this coming Saturday, August 13th, 8PM at the Morgan Arboretum in Ste-Anne-de-Bellevue for a FREE PUBLIC EVENT.

It is time for nature’s annual fireworks show, The Perseid Meteor Shower.
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We will have a presentation (rain, clouds or hopefully clear skies) and then we will venture outside (if it is clear) around the Bellevue Observatory to sit back and enjoy the BIG SHOW.

Bring a chair or blanket and some bug spray.