Eclipse Definition and 123 Threads

There's coming sun eclipse on Aug 1. I know that looking directly at the sun even though it is mostly obscured is unsafe to the eyes. But is it safe if I look at the sun eclipse when it is about to set?

Did anyone else catch the eclipse last night? I drug out the Dob around 9:30 and watched until 11:15 or so. It was brutally cold but totally cloudless and clear for most of the night. Saturn was right there too, at opposition I believe; so I got some good views of it too. I took a bunch of...

If the last one was any indication, tonight's total eclipse will completely darken the entire full moon. Just remember, never look directly at the moon without protection. My girl and I were gazing at the full moon one night twenty years ago and now we're married with two kids.

During a solar eclipse...calculate forces...etc Homework Statement During a solar eclipse, the moon, Earth, and sun lie on the same line, with the moon between Earth and the sun. (a) What force is exerted on the moon by the sun? __________N (b) What force is exerted on the moon by...

Last nights total Lunar eclipse was probably the first time a great many people even paid any attention to our natural satellite for quite a while. It's kind of taken for granted. After all, except for the passing phases, it usually doesn't change. Its the same face staring at us night after...

Set your alarms, get your cameras ready, clean the lenses on your scopes - it's loony time! http://news.nationalgeographic.com/news/2007/08/070827-lunar-eclispe.html http://news.nationalgeographic.com/news/2007/08/images/070827-lunar-eclipse_big.jpg

I guess many have watched the lunar eclipse last night I was just thinking about the duration of a lunar eclipse on my way home sun-to-earth = 1.5x10^8 km, moon-to-earth = 384400 km R(Earth) = 6378 km, R(Sun) = 6.96x10^5 km, R(Moon) = 1378 km Moon's period around Earth = 27.3 days x /...

Hey everyone! On March 3rd, there will be a lunar eclipse! Anyone going watch or take any pictures?? If you take any pictures please post them! For future solar/lunar eclipses go http://sunearth.gsfc.nasa.gov/eclipse/eclipse.html" !

Hey guys, I've got a query. When one of Jupiter's satellites reappears from its shadow wouldn't the satellite light up linearly? I mean if you assume it is circular wouldn't the amount it's lit depend on the area of a sector of a circle? And that would mean that since the area of a circle...

Hello, I'm looking for some equations which describe the periodicity of sun's eclipse.

Why do total eclipses of the Sun by the Moon reach maximum eclipse about 40 seconds before the Sun and Moon's gravitational forces align? :bugeye:

I'd just like to express my immense frustration at the fact that I am no more than a hundred miles away from a location where the partial solar eclipse can be viewed today. My family, on the other hand, can see the eclipse from our house and have stolen my solar specs and plan to call me while...

I was wondering if it is possible for all of the planets to line up in one line? The Bob (2004 ©)

Just wondered if anyone read this weeks New Scientist and more to the point the article on gravity. Aparently experiments have shown that pendulums behave irratically during a solar eclipse, and hence this has lead to some scientist questioning the laws of gravity and the work of Einstien...

PF member turbo-1 predicted that some superstitious Red Sox fans would attach some mystical significance to the lunar eclipse during the final game of the World Series. So far, fortunately, I have not seen too much of that in the news, although I have not asked many fans about it. I did find...

this is just a reminder Labguy already posted this three weeks ago on "Events" thread Here's one of many newsitems about it: http://space.com/spacewatch/eclipse_041027.html Here's Labguy's earlier post https://www.physicsforums.com/showthread.php?p=335764#post335764 It looks like it...

Hey guys, I just wanted to know what everyone's up too for the June 8th eclipse of Venus...(and inform anyone who doesn't know)

Thought some of you may be interested in these stunning pictures of the Total Solar Eclipse in Antarctica, which happened yesterday, 24 November 2003. The views are from Casey, Davis and Mawson Stations (these are Aussie “Research” stations in Antarctica – mostly CSIRO). Awesome stuff...

Hi, I was fortunate to be camping on November 8 and near a nice warm fire throughout the entire lunar eclipse. It was awesome! I have a question about the the apparent direction the moon appeared to travel through the Earth's shadow. This is kinda hard to put into words, so please bear...

I stumbled on this page while reading the weekly celestial weather report. http://astrosite.com/__JM1.htm the star of david is present at the exact moment in an astrological chart that the Earth experiences a total lunar eclipse on 11/8/2003...

[SOLVED] Effects of a massive object on light and its relation to the 1919 Eclipse What happens to light as it passes near a massive object and how it this principle or concept connected to the 1919 lunar eclipse where Einstein’s Photoelectric theory was proved (both the apparent and actual...

[SOLVED] Effects of a massive object on light and its relation to the 1919 Eclipse What happens to light as it passes near a massive object and how it this principle or concept connected to the 1919 lunar eclipse where Einstein’s Photoelectric theory was proved (both the apparent and actual...

Lunar eclipse tonight (15/16.5) and I found this night calculator http://aa.usno.navy.mil/data/docs/LunarEclipse.html that allows you to get information on the eclipse, and future eclipses.