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How far are the planets from the Sun? - Phys.org
2014年4月22日 · The eight planets in our solar system each occupy their own orbits around the Sun. They orbit the star in ellipses, which means their distance to the sun varies depending on where they are in ...
A universe of 10 dimensions - Phys.org
2014年12月11日 · To break it down, dimensions are simply the different facets of what we perceive to be reality. We are immediately aware of the three dimensions that surround us on a daily basis – those that ...
Global temperatures over last 24,000 years show today's warming ...
2021年11月10日 · A University of Arizona-led effort to reconstruct Earth's climate since the last ice age, about 24,000 years ago, highlights the main drivers of climate change and how far out of bounds human ...
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The latest science news and articles, new scientific research, technology breakthroughs
Flat wrong: the misunderstood history of flat Earth theories
2016年1月29日 · For most people, being described as a "flat Earther" is an insult. The idea of the Earth being flat is considered not only wrong, but a model of wrongness, the gold standard of being incorrect ...
Earth's orbit around the sun - Phys.org
2014年11月24日 · For several centuries, astronomers have applied the scientific method to answer this question, and have determined that the Earth's orbit around the Sun has many fascinating characteristics.
How strong is gravity on other planets? - Phys.org
2016年1月1日 · Gravity on Venus: Venus is similar to Earth in many ways, which is why it is often referred to as "Earth's twin". With a mean radius of 4.6023×10 8 km 2, a mass of 4.8675×10 24 kg, and a density ...
How does the sun produce energy? - Phys.org
2015年12月14日 · The Core: The core of the sun is the region that extends from the center to about 20–25% of the solar radius. It is here, in the core, where energy is produced by hydrogen atoms (H) being ...