Who knows. Whether he said it or not (probably not), the Earth is still a sphere. You can go on quoting and quoting, but you never quote people who have asserted since the days of Galileo that the earth is not flat. Why? Because no matter what anyone says, you won't listen to anyone who... Continue Reading →
Why do scientists think there might be life on earth like planets when aliens might survive hot temperatures with no water?
Good point. Great question. We just look for the most “likely” places life might develop. Interestingly, though, there are lifeforms like the ones you describe here on Planet Earth! You can find these lifeforms in Chile, specifically the Atacama desert. This place is burning hot and has had no significant rainfall in at least 250 years. According to express.co.uk “While... Continue Reading →
What country would be equal in size to the area of the moon?
The moon has 14.6 million mi². The earth, meanwhile, is 70.8% covered with water. What sticks out of the water covers 57.5 million mi². This means there’s only 3.9 times more land on Earth than on the moon. The moon takes up more than 1/3 of the landmass of Earth above water! Put that in your pipe... Continue Reading →
Space Debris – A Dodging Problem
This is a no frill video (no audio) produced by scientists, to depict just how much junk "litter" we have floating around up in space, some of it going 35,000 miles per hour. Just something to think about.
How would we know if there’s intelligent life on the planet?
This answer is re-quoted with my permission (from my own website). Take it as a rather interesting answer to your interesting question! Breaking news. Astrophysicists have discovered a new planet within the “Goldilocks” region orbiting a yellow dwarf star and believe it is teaming with life, thus putting to rest the age-old question: “Is there life on other... Continue Reading →
If you launched a satellite into low earth orbit and let it travel indefinitely without course corrections, how long would it take before it hits another object?
Okay, your question is how long until it hits another object also in low earth orbit, AKA space debris. In low Earth orbit you are not completely above the atmosphere, though it’s pretty thin up there. Most objects we place in orbit don’t need course corrections and likely succumb to the ever so slight air... Continue Reading →
Given that NASA has landed on the Moon, why did they not put some plants on the lunar surface?
Wow. What would have happened if astronauts had brought plants to the moon? Surely by now the moon would be green! Here I always thought the thing was made of blue cheese. You must know from the other answers that there’s no air on the moon and plants need air to survive just like you do. Another... Continue Reading →
Is, or will, our Sun also become a variable star? If so, what kind?
Not a variable star with fluctuating brightness, but our sun is getting brighter gradually over time. As the fuel in the sun is spent the sun gets 10% brighter and 10% hotter every billion years. So we estimate in a couple billion or so years the oceans will dry up and all life on Earth... Continue Reading →
On what planet should we build the first non-Earth city?
I know. It's sad. Depressing really. Humans will never build a city off our planet Earth. I say this because of distances. Even if we were to find a planetary candidate, it would take hundreds or thousands or more years to go one way to visit it just to see if the candidate is really... Continue Reading →
