why is the sky blue?

The sky appears blue because of a phenomenon called Rayleigh scattering. When sunlight reaches Earth’s atmosphere, it consists of a spectrum of colors, just like a rainbow. This sunlight encounters tiny molecules of nitrogen and oxygen in the atmosphere, which are much smaller than the wavelength of visible light. Rayleigh scattering occurs when light particles […]

1 min read

why can’t I see stars during the day?

During the daytime, you can’t see stars primarily because of the overwhelming brightness of the Sun and the scattering of sunlight by Earth’s atmosphere. However, under exceptional circumstances like during a total solar eclipse or when observing from a very high altitude (where atmospheric scattering is reduced), it is possible to see some of the […]

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why are some comets green?

Comets are celestial objects made up of a mixture of ice, rock, and dust that orbit the Sun. The green color of some comets is a result of the interaction between the Sun’s radiation and the chemicals present in the comet’s nucleus and coma (the glowing, extended cloud of gas and dust around the nucleus).The […]

1 min read

why does earth spin?

The Earth spins due to the conservation of angular momentum, a principle from physics that essentially says an object will maintain its spin unless acted upon by an external torque. When the solar system was forming about 4.6 billion years ago, it started as a large cloud of gas and dust called a solar nebula. […]

1 min read

why explore space?

Exploring space serves a multitude of purposes, both practical and philosophical. Here are several compelling reasons: In essence, exploring space is about advancing human knowledge, developing new technologies, securing our planet’s future, and potentially enabling the continuation of life beyond Earth’s boundaries.

2 mins read

why is pluto no longer a planet?

Pluto is no longer classified as a planet by the International Astronomical Union (IAU), the organization that officially defines what constitutes a planet in our solar system. The decision to redefine the term planet came after extensive debate among astronomers in the late 20th and early 21st centuries, particularly after the discovery of numerous objects […]

2 mins read

why are planets round?

Planets are round because of the force of gravity and the way matter behaves under its influence. Here’s a simplified explanation of why planets become spherical: In summary, the force of gravity, conservation of angular momentum, and various physical processes acting upon the matter in a protoplanetary disk all contribute to the formation of a […]

3 mins read