Fact Directory

Explore the latest fascinating facts freshly added to our collection!

Why don't helicopters always take off vertically?
Aviation
Helicopters don’t always take off vertically or straight up for several reasons. Although they are... Read more
What is the closest habitable planet?
Space
Wolf 1061c, thought to be a super-Earth exoplanet is believed to be the closest habitable planet. ... Read more
Why is the sky blue?
Science
The sky appears blue because sunlight, which contains all colors, is scattered as it passes through ... Read more
What is Hypersonic?
Aviation
Hypersonic speed refers to velocities above Mach 5, or five times the speed of sound, setting them a... Read more
Why do engines burn oil?
Automotive
It’s normal for engines to burn a bit of oil during regular use, and it often isn't a concern unle... Read more
What Is The Currency Of China?
Currency
The currency in China is the Chinese yuan ¥ (CYN), also known as the renminbi. One yuan is subdivid... Read more
What types of fuel do planes and aircraft use?
Aviation
Planes and aircraft primarily use two types of fuel: Jet fuel and AVGAS. Jet fuel, a kerosene-ba... Read more
Why Does Light Travel Slower in a Fiber Optic Cable?
Physics
Light travels slower in a fiber optic cable due to the refractive index of its materials, which slow... Read more
How Many Charge Cycles Does a Laptop Battery Last?
Technology
A laptop battery typically lasts for 300-500 charge cycles, or about 2-5 years depending on usage.Us... Read more
How much oil for Honda Click?
Motorcycles
The Honda Click requires 0.8L of 10W30 engine oil meeting API Classification SJ or higher. A... Read more