Remove all the space within the atoms making up the human body, and every person that’s ever lived would fit inside a baseball.
Chemistry 101: How Are Elements Grouped?
A great primer for people like me who were/are really bad at paying attention in a class at School.
Here’s why you can’t have a mountain the size of Olympus Mons on Planet Earth.
I did not know that.
Technology is enabling today’s kids to do some cutting edge scientific research. “Technology is doing more harm than good to kids” is common cliche among the elderly in my part of world but i beg to differ. Technology is neither good nor bad. Technology is what we make of it.
Image credit: YouTube/Евгений Славенков
Apparently, at about 09:30 local time, a very big meteor burned up over Chelyabinsk, a city in Russia just east of the Ural mountains, and about 1500 kilometers east of Moscow. The fireball was incredibly bright, rivaling the Sun! There was a pretty big sonic boom from the fireball, which set off car alarms and shattered windows.
Phil Plait has posted a series of videos and photos in this piece. The sight of a meteorite trail is beautiful and terrifying at the same time. I haven’t seen anything like this in my life.
First of all, I do not think this is related in any way to the asteroid 2102 DA14! For one thing, this occurred about 16 hours before DA14 passes. At 8 kilometers per second that’s nearly half a million kilometers away from DA14. That puts it on a totally different orbit.
This event just accentuates the fact that we Humans are grossly unequipped to handle the threats posed by NEOs.
You can find more reports, pictures and videos here.