Month: August 2010 (Page 6 of 7)

Northern Lights

Isn’t it exciting about the splash of Northern Lights due to the solar flare this week? Seems like we might be having sightings again tonight (August 5), with the show potentially moving to viewers even farther south in the Northern Hemisphere.

Northern Lights, also known as Auroras, occur when ions in the form of solar wind from the sun strike the gases in the upper atmosphere of the earth, causing them to glow. The glow typically occurs around the Arctic Circle, but large flares can cause a glow that can be seen throughout Canada and into the northern United States. Here is a photograph taken in Wisconsin.

aurora_venhaus_big

Photo from NASA Images

Links to sites with more information and photographs  (As usual, please check the links for suitability before showing to your children, as the content may have changed):

Spaceweather.com has the newest predictions and archives of photographs.

Incredible Flickr photographs

Article with information on sightings

We hear a lot about the Northern Lights. Are there Southern Lights?

Answer here.

Bug of the Week: Cicada Wasp

The cicadas showed up a week or so late this year. They usually are singing by Father’s Day.

cicada-close

But now they are out in full force, buzzing happily.

On Monday, I saw my first one of these.

cicada-killer-wasp

Even though it is far away, you can tell it is a big wasp.

What does it have to do with cicadas?

cicada-killer-wasp2

This is the Western cicada killer wasp, Sphecius grandis. They catch and sting cicadas. The female wasp carries the cicada to a nest she dug in the ground. The wasp lays an egg on the cicada, which will hatch into a larva. The larva uses the cicada as breakfast, lunch and dinner for several weeks. After pupating, the wasp remains underground until the cicadas emerge next year.

Here’s a video of a wasp carrying a cicada, looking for her nest. The person who took the video thinks the nest may have been covered over by construction materials. You can see her clean her antennae and do orientation flights, so that may very well be the case.

Notice this wasp is a darker color because it is another species.

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