You blink about 15-20 times per minute — roughly 1,200 times per hour

Light from the Sun takes 8 minutes and 20 seconds to reach Earth

Sunlight travels approximately 149.6 million kilometers to Earth in 8 minutes and 20 seconds

Your DNA stretched end to end would reach the Sun and back over 600 times

Human DNA length: 2 meters, Sun-Earth distance: 150 million km, repetitions: 900,000,000

The first alarm clock could only ring at 4 AM — invented by Levi Hutchins in 1787

Levi Hutchins created the first alarm clock in 1787, set to ring at 4 AM

How long does it take for radio waves from the Voyager 1 spacecraft, launched in 1977, to reach Earth, given the current distance between the two?

Voyager 1's radio waves take approximately 17 hours to reach Earth, considering its current distance of about 145.3 astronomical units

The human nose can detect about 1 trillion different scents

The human nose can distinguish approximately 1 trillion unique odors

The first photograph took 8 hours of exposure — taken by Niépce in 1826

Niépce's daguerreotype, first photograph, required 8 hours exposure in 1826