The Skeptical Teacher

Musings of a science teacher & skeptic in an age of woo.

Posts Tagged ‘nebula’

Happy Skeptical Valentine’s Day!

Posted by mattusmaximus on February 14, 2010

In true Skeptical Teacher form, I wanted to wish everyone a Happy Valentine’s Day, but in a way that will teach a good skeptical lesson.  I was inspired by today’s Astronomy Picture of the Day (APOD), which is of the gorgeous Rosette Nebula…

The APOD text displays why this is a nice, timely lesson in skepticism:

Explanation: What surrounds the florid Rosette nebula? To better picture this area of the sky, the famous flowery emission nebula on the far right has been captured recently in a deep and dramatic wide field image that features several other sky highlights. Designated NGC 2237, the center of the Rosette nebula is populated by the bright blue stars of open cluster NGC 2244, whose winds and energetic light are evacuating the nebula’s center. Below the famous flower, a symbol of Valentine’s Day, is a column of dust and gas that appears like a rose’s stem but extends hundreds of light years. Across the above image, the bright blue star just left and below the center is called S Monocerotis. The star is part of the open cluster of stars labelled NGC 2264 and known as the Snowflake cluster. To the right of S Mon is a dark pointy featured called the Cone nebula, a nebula likely shaped by winds flowing out a massive star obscured by dust. To the left of S Mon is the Fox Fur nebula, a tumultuous region created by the rapidly evolving Snowflake cluster. The Rosette region, at about 5,000 light years distant, is about twice as far away as the region surrounding S Mon. The entire field can be seen with a small telescope toward the constellation of the Unicorn (Monoceros).

Of course, there isn’t really a great big rose 5,000 light-years away in the sky – this is just another classic example of pareidolia, the phenomenon by which the pattern recognition programming in our brains makes familiar pictures out of otherwise random visual data (or audio data, as in the case with “electronic voice phenomenon”).  The whole point is that while our brains might dumbly fill in the gaps and give us the illusion of seeing a rose, we can think at a higher level and see past the illusion to the beautiful reality that lies beneath.

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The Hand of God?

Posted by mattusmaximus on April 7, 2009

There is an image from the Chandra X-Ray Observatory which is all over the Internet these days. Here it is…

What do you see? Most people, when asked, say they see what looks like a large ghostly hand reaching towards the nebula to the upper right of the photo. In actuality, according to NASA, the picture is an x-ray photograph of a young pulsar, or rotating neutron star

A small, dense object only 12 miles in diameter is responsible for this beautiful X-ray nebula that spans 150 light years. At the center of this image, made by NASA’s Chandra X-ray Observatory, is a very young and powerful pulsar, known as PSR B1509-58, or B1509 for short. The pulsar is a rapidly spinning neutron star which is spewing energy out into the space around it to create complex and intriguing structures, including one that resembles a large cosmic hand.

Read the rest of this entry »

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