What the . . . .?

steve01 · Dec 7, 2004

The latest image gallery on space.com - the best from Chandra . . . there is a photo of Titan(yes a moon of Saturn) and its shadow going across the Crab Nebula! I'm just not getting it. Could someone explain why they would super-impose those two images?

iron_sun_254 · Dec 7, 2004

It's not supperimposed. Titan crossed in front of the Crab Nebula creating and shadow from our perspective on Earth.

Saiph · Dec 7, 2004

I see your confustion steve. Titan can't cast a shadow on the crab nebula that we'd be able to detect (due to lack of intensity and size) considering how far away the crab nebula is. However, I believe the picture is of an "occultation" and the writer just used the wrong term. The spot they show is titan, and it's blocking out the x-rays from the crab, thereby showing a black spot. <div class="Discussion_UserSignature"> --------------------SaiphMOD@gmail.com -------------------"This is my Timey Wimey Detector. Goes "bing" when there's stuff. It also fries eggs at 30 paces, wether you want it to or not actually. I've learned to stay away from hens: It's not pretty when they blow" -- The Tenth Doctor, "Blink" </div>

Saiph · Dec 7, 2004

I sent a suggestion in to bring their attention to the mistake. <div class="Discussion_UserSignature"> --------------------SaiphMOD@gmail.com -------------------"This is my Timey Wimey Detector. Goes "bing" when there's stuff. It also fries eggs at 30 paces, wether you want it to or not actually. I've learned to stay away from hens: It's not pretty when they blow" -- The Tenth Doctor, "Blink" </div>

germaine · Dec 11, 2004

HI there! just new here.. just visited the site because we just had our astrocamp in CAsa REal Montessori.. (nyone here knew that?) I was not that really curious with these celestial bodies not until now... I was really amazed... because we really had this answer sheet thingy and i and 2 of my friends kept on asking some personnels there.. I was just amaze sa wide knowledge nila.. my friend and i remarked..."ANG GALING, KABISADO NILA!" hehe... nyways... sana welcome ako here! chao!

alokmohan · Dec 11, 2004

If it is a mistake,bad thing.They should correcet it now.

wisefool · Dec 11, 2004

Germaine, so you are a space chick. Also a spaced chick? While you waste away on wicked winter nights, comfort your bones with frequent visits to my astronomy links site, paying special attention to the "For Beginners and Everybody Else" subsection: http://members.cox.net/clarkt7/astronomylinks

Saiph · Dec 12, 2004

right. Or, if they wish to keep the term shadow, they would be accurate in saying its the X-ray shadow of Titan cast on earth (since we're observing it) due to the x-ray light emitted from the crab nebulae. Basically they need to reverse the direction of the shadow. <div class="Discussion_UserSignature"> --------------------SaiphMOD@gmail.com -------------------"This is my Timey Wimey Detector. Goes "bing" when there's stuff. It also fries eggs at 30 paces, wether you want it to or not actually. I've learned to stay away from hens: It's not pretty when they blow" -- The Tenth Doctor, "Blink" </div>

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