Science Facts

The James Webb Space Telescope is so sensitive to infrared that it could detect the heat of a bumblebee from as far away as the Moon cbsnews.com .

On Venus, a single day lasts about 243 Earth days – longer than a Venusian year, which is about 225 Earth days science.nasa.gov .

A day on Venus is longer than a year on Venus. Venus rotates so slowly that it takes 243 Earth days to complete one rotation, but it only takes 225 Earth days to orbit the Sun.

The human heart pumps so much blood over an average lifetime – about 215 million liters – that it could fill 86 Olympic-sized swimming pools businessinsider.com .

By the end of your life, you will have shed roughly 1,000 complete layers of skin – essentially replacing your outer skin every 2-4 weeks throughout your lifetime businessinsider.com .

Over an average 80-year lifespan, a person produces about 20,000 to 30,000 liters of saliva – enough to fill a small swimming pool (or around 40 hot tubs) iflscience.com businessinsider.com .

Mercury is the fastest planet in our solar system, speeding through space at about 47 km/s (107,000 mph) and completing an orbit in just 88 days science.nasa.gov .

Space has a distinct odor: astronauts report that after spacewalks their suits smell of seared steak, hot metal and gunpowder – a metallic, burnt odor that clings to spacesuits after exposure to the vacuum people.com people.com .

Saturn has an average density lower than water – the only planet that would float in a (hypothetically enormous) bathtub science.nasa.gov .

Humans actually emit a faint glow of visible light; our bodies produce "ultraweak photon emissions" that are about a million times too dim for the human eye to see sciencefocus.com .