Jun 17, 2012 · What causes us to "see stars" when we bash our heads? I also notice the same phenomenon when I stand up suddenly and feel light-headed when blood pools in my legs. This is especially confusing, since the two "stimuli" operate by different mechanisms: a blow to the head versus a brief episode of hypotension.

Oct 20, 2013 · Why can we see stars that are actually behind the Moon? « on: 20/10/2013 18:25:24 » Due to the effect of annual aberration (which is one aspect of stellar aberration), we observe stars up to 20.5 arcsec displaced from their long-term average position.

Apr 5, 2011 · You will not see these stars with the naked eye, but you might be able to see bright stars if you have a computer-pointed telescope. You may be able to see bright stars when the Sun is at least 15 degrees below the horizon (1 hour after sunset or 1 hour before dawn), but dimmer stars require the Sun to be farther below the horizon.

Nov 12, 2009 · With regard to your question, there are 2 specific parts I see. 1) Standing up quick. When you stand up very quickly, then the inertia in your body causes the blood to run out of your head and neck and upper body. Thus you see stars and some people may faint. 2) Stretching This happens to me too but I also get a headache sometimes!

Jan 6, 2010 · However, any photographs you see from the moon will be exposed for the ground brightness, and not the sky brightness. If you were on the Moon, on the night-side, you'd be able to see and photograph the stars just as you can on Earth at night time, but just as on Earth, the ground would be dark.

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Jan 16, 2011 · The other time you occasionally see stars is when you stand up too quick in the bath. This is a blood pressure hyperperfusion thing because when you're hot in the bath, all of your blood vessels dilate out to get as much blood as close to …

Sep 1, 2017 · In Australia, I would be able to see the Southern Cross, but not the Big Dipper. At any given time ~1/2 of the stars are above the horizon for any place on the Earth. As the Earth rotates, different stars rise and set. However, unless you are on the Equator, there will be some stars that will always be in the sky and never set.

Sep 22, 2005 · The “seeing stars” symptom you describe is similar to that sometimes experienced by people when they stand up too quickly, this is due to a temporary insufficiency of blood flow to the head. If you are experiencing this symptom when you yawn then this could be explained by the presence of a “double chin”.

Jun 17, 2012 · Colin - Yeah, you could see difficulties in a syllabus which lasts 5 years, keeping up with some of the new changes and the various knowledge that comes in to the body of science. But to be honest with you, I think some of this is around the way that the A-levels have been assessed.