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Solstice, perihelion, aphelion equinox 2011, 2012, 2013, 2014, 2015, northern, southern hemisphere; 25,725 year cycle

How to understand the Mayan Long Count calendar date of 21 December 2012. A time of statistical risk of big earthquakes. This page lists dates, of Earth and Sun orbits for solstice, perihelion, aphelion and equinox for 2011, 2012, 2014, 2015 and 2016. The solstice of December 2012 marks the end of a 25,725 year wobble of the spin of the Earth; the start of a new, giant wobble; a mark on a calendar. Not the end of the world.

6 comments    end of the world ice age equinox
72

Still nothing... What about you, Newton?

Apples fall to the ground, but the Moon not! Why in some cases the gravitational interaction causes the free fall while in other the circular motion? The article presents the Universal Law of Gravitation, with some interesting related subjects.

0 comments    gravity isaac newton free fall
73

A Hypothesis Concerning Contradictions of Warming Vs Freezing

Aside from checking all the claims yourself, it is hard to prove who is correct as far as climate change is concerned. Each side has its proofs that can be verified to a certain extent. There are natural causes to global climate change and a few examples in history where humanity changed the climate in the short term. With the consensus is divided as to the nature of climate change.

1 comment    global warming climate change carbon footprint
75

How to Read the Moon Phases

Have you ever looked at the Moon and wondered just what phase it was in? Are you fascinated with the Moon's journey as it travels across the sky? This article will explain the basics of tracking the Moon for observation.

5 comments    moon moon phases moon's orbit
57

What do Australians want in a house builder.

I am a retired builder from Queensland Australia, and I am here to answer your questions. I am here to answer your questions and queries about building within the Australian housing market. I have 40 years of building knowledge, and I want to know...

0 comments    home house housing
80

The Earth's Moon: Eclipses (Solar and Lunar), Tides, Phases and Characteristics

Almost every night, if you look up, you can see the wonderful moon shining back down upon you. But did you ever wonder why the moon is shining at night, but not in the day? Or what the moon really is? How about the importance of the moon, is it more than just a beautiful spectacle? Today these are the questions I wish to explain.

5 comments    lunar the moon planet moon
78

Binary stars

Binary stars are one of the most attractive and interesting astronomical objects. Scientists began to address more of them entering the telescopic era. Begging with discussion on kinematics of the binary system, we talk about an almost unbelievable phenomenon known as Albireo paradox. Further, we reveal the origin of the binary stars and talk about classification. At the end we will show how to directly calculate mass in case of binary systems. All of this is illustrated with concrete examples.

3 comments    galaxy solar system milky way
Under cover agent profile image71

In My Beginning - Short Story

Where, when do we begin, any one of us or anything? Where, when? 'In My Beginning - Short Story' we explore a journey from - to. Enjoy the trip.

0 comments    universe sun light years
79

The Moon, Earth's First Space Station

Is Earth's First Space Station the Moon? Wouldn't the perfect disguise for a space station used to observe Earth inhabitants look like an abandoned Moon? This article explores this idea with recent research, unexplainable facts and unique conclusions.

50 comments    earth moon eclipse
80

Kepler's laws of planetary motion

Johannes Kepler, one of the greatest astronomers, discovered fascinating laws underlying Earth's motion. Three Kepler's laws of planetary motion rule all motions in the Solar system as well as any planetary system. Giant contribution in this discovery gave Tycho Brahe with his accurate measurements of planetary positions. The article presents all three Kepler's laws qualitatively and and quantitatively.

2 comments    sun planet solar system
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