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What would it take to create a colony on another planet?
by Marshall Brain | September 8, 2010
You Asked:
What would it take to create a colony on another planet? — Daniel, Munich, Germany
Marshall Brain Answers…
And all of a sudden, it has changed from Summer to Fall
by Marshall Brain | August 25, 2010
Yesterday I went to go for a walk in the evening. I do this just about every day, either by myself or as a “family walk”. Before going out the door I check the thermometer. The evening readings over the past couple of months have been things like “97″, “92″, “98″, “95″. Always in the [...]
Why doesn’t the moon pull other things like it pulls ocean water?
by Marshall Brain | August 11, 2010
You Asked:
Why doesn’t the moon pull other things like it pulls ocean water? — Anish, Ulan, Namibia
Marshall Brain Answers…
You Asked:
Where does water go when the tide goes out? — Dave, Bellingham, Wash.
Marshall Brain Answers…
NASA takes a crack at one of the most important questions of the 21st century: How do we know that humans are causing global warming? Here is the answer: If Earth has warmed and cooled throughout history, what makes scientists think that humans are causing global warming now? The answer includes these points: 1) The [...]
Chances are that you are sitting in a chair right now, so it seems like you are stationary. But in fact you are moving through the universe at a tremendous speed at this very moment. Let’s take a look at where all that motion is coming from. The first thing to consider is the earth’s [...]
NASA’s view of the Landsat program: ‘The Landsat program is the longest continuous global record of the Earth’s surface, and continues to deliver both visually stunning and scientifically valuable images of our planet. This short video highlights Landsat’s many benefits to society:’ The Landsat program started with Landsat 1 in 1972. It lasted until 1978. [...]
Your goal in this game is to get a planet into a stable orbit around a sun. Having accomplished that, you can try to get a moon orbiting the planet around the sun: My solar System 2.0 One thing to note – in our solar system, the sun’s mass (2×10^30 kg) is gigagtic compared to [...]
In Star Wars, the Death Star is able to destroy an entire planet: But what if you really wanted to destroy planet earth like that? (where “destroy” is defined as “by any means necessary, to change the Earth into something other than a planet or a dwarf planet.”) Is it technologically possible? This article is [...]
How to see the effects of climate change in the future
by Marshall Brain | September 29, 2009
Google Earth has added a new overlay that lets you see what is likely to happen to planet earth as its climate changes in the coming decades: Google Earth climate change 3D map unveiled Using data provided by the Intergovernmental Panel on Climate Change, the search giant created new layers for Google Earth showing the [...]
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