The famous sci-fi movie Alien 1979, “In space, no one can hear you scream,” is a staple of pop culture. It communicates a fundamental scientific reality. Deep space is a vacuum, and sound waves require a medium to travel. Without…
In one sentence, the answer is no: Black holes are not cosmic vacuum cleaners. One of the most persistent misconceptions in popular science is the idea that black holes act like giant “cosmic vacuum cleaners. Wandering through the universe and…
The answer is NO, the North Star does not stay fixed in the sky forever. For centuries, people have used Polaris (the current North Star) to find north and navigate at night. It appears almost fixed in the sky, but…
When people ask, “Is the far side of the Moon always dark?” The clear answer is a big NO. The moon doesn’t really have a dark side. The far side of the moon is never permanently dark. Every region of…
I believe you have heard about how humans only use 10% of their whole brain, not tapping the remaining 90% of their potential throughout their whole life. This quote really does sound too good to be true, and I must…
The Bloop was a mysterious sound so powerful that it travelled through the depths of the ocean and was detected by hydrophones thousands of miles apart. Its strange nature captured people’s imagination and gave rise to one of the most…