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General Thread For All Lovers Of Astronomy And Space by Spy360(m): 12:43pm On Sep 27
I have always been fascinated by the wonders of the universe.

The moon rotating round the earth, the earth round the sun which carries along with it all the planets, the solar system located at the centre of the milky way galaxy, all those stars in our galaxy spinning away into the unknown regions of a dark space into eternity.

Astrophiles come here let's share our passion for astronomy, star gazing, etc

CC. beauty7

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Re: General Thread For All Lovers Of Astronomy And Space by Missyajoke(f): 12:49pm On Sep 27
Hope this thread will be interesting sha
Re: General Thread For All Lovers Of Astronomy And Space by oscarsam(m): 1:02pm On Sep 27
Space booked´┐Ż
Re: General Thread For All Lovers Of Astronomy And Space by Sadiqali24(m): 1:06pm On Sep 27
I don buy land
Re: General Thread For All Lovers Of Astronomy And Space by Sirmwill: 1:11pm On Sep 27
This should make sense
Re: General Thread For All Lovers Of Astronomy And Space by sorextee(m): 1:21pm On Sep 27
Lets get it started.
Re: General Thread For All Lovers Of Astronomy And Space by Introvertmemer(m): 1:30pm On Sep 27
Please who knows where i can buy a telescope at a cheap price
Re: General Thread For All Lovers Of Astronomy And Space by exynos(m): 1:53pm On Sep 27
This is going to be nice
Re: General Thread For All Lovers Of Astronomy And Space by Jman06(m): 3:18pm On Sep 27
Present
Re: General Thread For All Lovers Of Astronomy And Space by davidadeoluwa(m): 3:29pm On Sep 27
Who knows, i might get a free piece of land on Mars grin
Re: General Thread For All Lovers Of Astronomy And Space by ezeudo97817: 3:30pm On Sep 27
I don buy farmland
Re: General Thread For All Lovers Of Astronomy And Space by Sadiqali24(m): 5:35pm On Sep 27
Why is the sky blue
That was my first assignment in astronomical physics class
Re: General Thread For All Lovers Of Astronomy And Space by Spy360(m): 6:49pm On Sep 27
Introvertmemer:
Please who knows where i can buy a telescope at a cheap price
It's has to be online I think.

1 Like

Re: General Thread For All Lovers Of Astronomy And Space by Spy360(m): 6:54pm On Sep 27
The current trend now is that sign of life is being discovered in Venus. Probably Venus had living things millions of years ago or was it that early civilization moved from Venus to Earth when the planet became inhabitable?
Re: General Thread For All Lovers Of Astronomy And Space by Sadiqali24(m): 6:57pm On Sep 27
Spy360:
The current trend now is that sign of life is being discovered in Venus.
yeah I had that too
Re: General Thread For All Lovers Of Astronomy And Space by beauty7(f): 8:24pm On Sep 27
How the moon was formed


Analysis of samples brought back from the NASA Apollo missions suggest that the Earth and Moon are a result of a giant impact between an early proto-planet and an astronomical body called Theia.

A few theories


'There used to be a number of theories about how the Moon was made and it was one of the aims of the Apollo program to figure out how we got to have our Moon,' says Sara.

Prior to the Apollo mission research there were three theories about how the Moon formed.

Capture theory suggests that the Moon was a wandering body (like an asteroid) that formed elsewhere in the solar system and was captured by Earth's gravity as it passed nearby. In contrast, accretion theory suggested that the Moon was created along with Earth at its formation. Finally, according to the fission scenario, Earth had been spinning so fast that some material broke away and began to orbit the planet.

What is most widely accepted today is the giant-impact theory. It proposes that the Moon formed during a collision between the Earth and another small planet, about the size of Mars. The debris from this impact collected in an orbit around Earth to form the Moon.


Apollo mission evidence


The Apollo missions brought back over a third of a tonne of rock and soil from the Moon.

'When the Apollo rocks came back, they showed that the Earth and the Moon have some remarkable chemical and isotopic similarities, suggesting that they have a linked history,' says Sara.

'If the Moon had been created elsewhere and was captured by the Earth's gravity we would expect its composition to be very different from the Earth's.

'If the Moon was created at the same time, or broke off the Earth, then we would expect the type and proportion of minerals on the Moon to be the same as on Earth. But they are slightly different.'

The minerals on the Moon contain less water than similar terrestrial rocks. The Moon is rich in material that forms quickly at a high temperature.

'In the seventies and eighties there was a lot of debate which led to an almost universal acceptance of the giant impact model.'

Lunar meteorites are also an important source of data for studying the origins of the Moon.

'In some ways meteorites can tell us more about the Moon than Apollo samples because meteorites come from all over the surface of the Moon,' adds Sara, 'while Apollo samples come from just one place near the equator on the near side of the Moon.'

Earth's greatest spinoff


Before Earth and the Moon, there were proto-Earth and Theia (a roughly Mars-sized planet).

The giant-impact model suggests that at some point in Earth's very early history, these two bodies collided.

During this massive collision, nearly all of Earth and Theia melted and reformed as one body, with a small part of the new mass spinning off to become the Moon as we know it.

Scientists have experimented with modelling the impact, changing the size of Theia to test what happens at different sizes and impact angles, trying to get the nearest possible match.

'People are now tending to gravitate towards the idea that early Earth and Theia were made of almost exactly the same materials to begin with, as they were within the same neighbourhood as the solar system was forming,' explains Sara.

'If the two bodies had come from the same place and were made of similar stuff to begin with, this would also explain how similar their composition is.'


The mineralogy of Earth and the Moon are so close that it's possible to observe Moon-like landscapes without jetting off into space.

'If you look at the lunar surface, it looks pale grey with dark splodges,' Sara says. 'The pale grey is a rock called anorthosite. It forms as molten rock cools down and lighter materials float to the top, and the dark areas are another rock type called basalt.'


Similar anorthosite can be seen on the Isle of Rum in Scotland. What's more, most of the ocean floor is basalt - it's the most common surface on all the inner planets in our solar system.

'However, what is really special on the Moon, that we can't ever replicate on Earth, is that the Moon is geologically rather dead,' Sara says.

The Moon hasn't had volcanoes for billions of years, so its surface is remarkably unchanged. This is also why impact craters are so clear.

By looking at the Moon we can tell a lot about what the Earth was like four billion years ago.

Prof Sara Russell explains more about the Moon's formation:


A balancing influence


Having a moon as large as ours is something that's unique in our solar system.

'While other planets have tiny moons, the Earth's Moon is almost the size of Mars,' Sara says.

5 Likes

Re: General Thread For All Lovers Of Astronomy And Space by beauty7(f): 8:43pm On Sep 27
Let me summarize the above information about the formation of the moon, according to scientists.

There are a couple of theories concerning moon formation viz:

(1)Capture theory: It suggests that the Moon was a wandering body (like an asteroid) that formed elsewhere in the solar system and was captured by Earth's gravity as it passed nearby.

(2) Accretion theory: This suggests that the Moon was created along with Earth at its formation.

(3)Fission scenario: This states that the earth had been spinning so fast that some material broke away and began to orbit the planet.

(4) Giant Impact theory: This is the latest and the most acceptable theory which states that proto-earth collided with Theia and fused together to form our Earth.
But a part of the fussion between proto-earth and Theia broke off and become what we now refer to as the moon.

4 Likes

Re: General Thread For All Lovers Of Astronomy And Space by oscarsam(m): 9:43pm On Sep 27
beauty7:
Let me summarize the above information about the formation of the moon, according to scientists.

There are a couple of theories concerning moon formation viz:

(1)Capture theory: It suggests that the Moon was a wandering body (like an asteroid) that formed elsewhere in the solar system and was captured by Earth's gravity as it passed nearby.

(2) Accretion theory: This suggests that the Moon was created along with Earth at its formation.

(3)Fission scenario: This states that the earth had been spinning so fast that some material broke away and began to orbit the planet.

(4) Giant Impact theory: This is the latest and the most acceptable theory which states that proto-earth collided with Theia and fused together to form our Earth.
But a part of the fussion between proto-earth and Theia broke off and become what we now refer to as the moon.


Nice one beauty7.
Talking about the Moon, going from the little research I've made so far, the moon has no light on it's own. Rather, the light we do see from the moon is as a reflection of the light from the Sun.

What do you have to say about this.
Re: General Thread For All Lovers Of Astronomy And Space by beauty7(f): 10:31pm On Sep 27
oscarsam:


Nice one beauty7.
Talking about the Moon, going from the little research I've made so far, the moon has no light on it's own. Rather, the light we do see from the moon is as a reflection of the light from the Sun.

What do you have to say about this.

Yes I read so too.

The surface of the moon reflects the light from the sun that strikes it.

The moon only reflects between 3 to 12 percent of the sun light that strikes it's surface.

1 Like

Re: General Thread For All Lovers Of Astronomy And Space by davidadeoluwa(m): 10:38pm On Sep 27
A recent study shows that the moon moves few centimeters (about 2cm yearly) away from the earth as it orbits. This confirms that the moon was closer to earth when it was formed
Re: General Thread For All Lovers Of Astronomy And Space by oscarsam(m): 11:00pm On Sep 27
Any Flat Earth believer in the house??

Not minding how far science has gone to prove that the Earth is round like a ball shape, I so much believe that the Earth is flat and has so many theories to back this up.

1 Like

Re: General Thread For All Lovers Of Astronomy And Space by Najdorf: 5:27am On Sep 28
oscarsam:
Any Flat Earth believer in the house??

Not minding how far science has gone to prove that the Earth is round like a ball shape, I so much believe that the Earth is flat and has so many theories to back this up.
Please share those theories if you can.
Re: General Thread For All Lovers Of Astronomy And Space by physicistman(m): 7:29am On Sep 28
oscarsam:
Any Flat Earth believer in the house??

Not minding how far science has gone to prove that the Earth is round like a ball shape, I so much believe that the Earth is flat and has so many theories to back this up.

The sun and moon as seen from earth's sky appears round, but somehow in your magical mind the earth has to be like a flat plate.
okay o

2 Likes

Re: General Thread For All Lovers Of Astronomy And Space by Spy360(m): 10:08am On Sep 28
beauty7:
Let me summarize the above information about the formation of the moon, according to scientists.

There are a couple of theories concerning moon formation viz:

(1)Capture theory: It suggests that the Moon was a wandering body (like an asteroid) that formed elsewhere in the solar system and was captured by Earth's gravity as it passed nearby.

(2) Accretion theory: This suggests that the Moon was created along with Earth at its formation.

(3)Fission scenario: This states that the earth had been spinning so fast that some material broke away and began to orbit the planet.

(4) Giant Impact theory: This is the latest and the most acceptable theory which states that proto-earth collided with Theia and fused together to form our Earth.
But a part of the fussion between proto-earth and Theia broke off and become what we now refer to as the moon.

I will take number 1 and 2 combined.

Because the moon should have similar creation theory with what is obtainable for the moons of other planets. I think when our solar system was forming smaller objects began to orbit any larger object closest to it, our moon found us just as the moons of other planets fell under their gravitational influence.

Nice one.
Re: General Thread For All Lovers Of Astronomy And Space by Spy360(m): 10:11am On Sep 28
oscarsam:


Nice one beauty7.
Talking about the Moon, going from the little research I've made so far, the moon has no light on it's own. Rather, the light we do see from the moon is as a reflection of the light from the Sun.

What do you have to say about this.

The primary source of light in our solar system is the sun. Every other object reflects its light including the moon.

If you were to travel to the moon, you will see the earth reflecting the light from the sun. That's why we also see other planets like Mercury, Venus, and even far away Jupiter.

2 Likes

Re: General Thread For All Lovers Of Astronomy And Space by Spy360(m): 10:15am On Sep 28
davidadeoluwa:
A recent study shows that the moon moves few centimeters (about 2cm yearly) away from the earth as it orbits. This confirms that the moon was closer to earth when it was formed
Probably it is gradually escaping from the earth's gravitational pull similar to any spinning object.

This is serious as in millions of years time, moonlight will be an ancient experience...
smiley
Re: General Thread For All Lovers Of Astronomy And Space by davidadeoluwa(m): 11:00am On Sep 28
Spy360:

Probably it is gradually escaping from the earth's gravitational pull similar to any spinning object.

This is serious as in millions of years time, moonlight will be an ancient experience...
smiley
smiley I'm glad to be part of such wonderful experience. Imagine an earth with no moon, so boring for those kids
Re: General Thread For All Lovers Of Astronomy And Space by beauty7(f): 11:43am On Sep 28
Spy360:

I will take number 1 and 2 combined.

Because the moon should have similar creation theory with what is obtainable for the moons of other planets. I think when our solar system was forming smaller objects began to orbit any larger object closest to it, our moon found us just as the moons of other planets fell under their gravitational influence.

Nice one.
Re: General Thread For All Lovers Of Astronomy And Space by oscarsam(m): 3:52pm On Sep 28
physicistman:


The sun and moon as seen from earth's sky appears round, but somehow in your magical mind the earth has to be like a flat plate.
okay o

The shape of the Moon is Elliptical and not round as you are made to believe.

Perhaps a closer look will help you understand more.
Re: General Thread For All Lovers Of Astronomy And Space by oscarsam(m): 4:00pm On Sep 28
Najdorf:

Please share those theories if you can.

Not theories per say, rather observations with many unanswered questions.

The first man to travel into "space" said the earth is as flat as a disk with upturned edges. He didn't use fish lens cameras. He's called Auguste Picard. Why aren't we taught about him?

He said he saw the sun and went past it till he hit water far above the sun. Why hasn't anyone explained what Picard saw or refute him in his lifetime? They simply waited till he died before they began telling lies
Re: General Thread For All Lovers Of Astronomy And Space by GeneralOnovo(m): 4:49pm On Sep 28
oscarsam:


Not theories per say, rather observations with many unanswered questions.

The first man to travel into "space" said the earth is as flat as a disk with upturned edges. He didn't use fish lens cameras. He's called Auguste Picard. Why aren't we taught about him?

He said he saw the sun and went past it till he hit water far above the sun. Why hasn't anyone explained what Picard saw or refute him in his lifetime? They simply waited till he died before they began telling lies

More points please,i have been curious about this flat earth theory.
Re: General Thread For All Lovers Of Astronomy And Space by khingTony(m): 7:02pm On Sep 28
oscarsam:


Not theories per say, rather observations with many unanswered questions.

The first man to travel into "space" said the earth is as flat as a disk with upturned edges. He didn't use fish lens cameras. He's called Auguste Picard. Why aren't we taught about him?

He said he saw the sun and went past it till he hit water far above the sun. Why hasn't anyone explained what Picard saw or refute him in his lifetime? They simply waited till he died before they began telling lies
The earth is not flat, or how will you explain the "Sinking" illusion of a ship when you watch it sail the distance, how will you explain the rising and setting of the sun, how will you explain the fact that its 7pm here but 11am in Washington, how will you explain the circumnavigation (where a sailor returned to the same spot severally while sailing round the earth), how will you explain the low temperature of the North and south poles and the high temperature of the equatorial region How will you explain the lunar eclipse where the earth always have a round profile/impression on the moon And so much more

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