reply to post by magickmaster
Ok, here goes, I'm sure in 4 pages you probably have these answers, but as it is first thing in the morning, I have just woke up, and some of the
nasty, arrogant answers on the first page have made me skip to the end.....hopefully this will help....
Originally posted by magickmaster
I was taught as a child about shooting stars. Then I grew up and learned they are not stars at all, they are supposed to be comets and meteors. So I
was lied to at an early age, and now I do not trust anything they tell me about space.
Before man understood what stars were, they thought meteors were in fact..shooting stars. I guess the name stuck, even though we learned what they
were. I guess it sounds more fun to the kids.
Jupiter and Venus are Planets yet they shine bright at night, like stars. I cannot see Mars and I cannot see Saturn, so why can I see Venus and
A few factors here, Jupiter is big, Venus is close, therefore, when they are in the right position to be viewed from Earth, they are the brightest
Mars, when it is closer to Earth can also be very bright.
However, you are only going to see a planet when it is in the right position, ie, on the same side of the Earth as the sun, although larger planets
like Jupiter can be seen on the other side, just as long as they don't go behind the sun from our perspective.
The five planets that can be seen unaided are Mercury, Venus, Mars, Jupiter and Saturn.
Use a program like stellurium on the PC, or Google sky on your phone to find them.
If a star shines because it's burning off energy, and planets are not, then why do Venus and Jupiter shine bright like stars?
It really is just reflection of the suns light, everything reflects light, that is how you see things, nothing to do with mirrors, it's just the way
Next....I see flashes of light shoot across the night sky and i'm told they are meteors burning up as they enter our atmosphere. How come some
meteors burn up and others do not and actually impact the earth? How come more do not impact the earth, since I can see them almost every night, and
that's just in my little quadrant of the sky?
Most you see are nothing more than grains of sand to pebble sized rocks. When they hit the atmosphere, the friction caused with the air causes them to
burn up, quite dramatically, hence why something as small as a grain of sand can be visible. There are lots of these floating about, whether from the
formation of the solar system, or from a passing comet (usually the cause of meteor showers).
Billions of years on, there is less big ones floating about, although they are there, and there is a load of them sitting just past Mars orbit in the
asteroid belt. Occasionally these big ones collide and send them hurtling off towards us.
The Earths atmosphere can only provide so much protection, and while car sized ones may burn up with the friction (or explode due to gases inside),
occasionally these bigger ones can break through. Fortunately Earth is mostly covered by water, and they normally end up in Davey Jones locker.
The real big ones are rare, the last known one to hit Earth was in 1908 in Tunguska, and it caused a pretty big bang, we don't want one of them
exploding over a populated area.
The really huge ones are a million year thing, and the Dinosaurs were the last ones to witness that.....ouch.
Are they actually meteors or comets? Or are we seeing visible light reflections of spacecraft flying by at high speeds? Are some of them
Usually meteors (although some man made debris as well), Tunguska is now thought to have been a comet, so we don't want them hitting us!
Some that you see, solid light, no trail, going in a straight line then disappearing probably are man made gizmos floating around the Earth. I'm not
sure what you mean by light craft.
If you are a scientist, please explain these things in your most understandable way. Is it that I just do not understand science very well? Or
are these reasonable questions at all?
I am not a scientist, but I do take time to learn (Google can help too). Don't worry if you do not understand science, not everybody does, and it is
never unreasonable to ask questions, you will never learn if you don't. Even Einstein asked questions.
edit on 25/9/12 by woogleuk because: (no reason given)