Розуміння Космічного Розширення

Hubble’s Law

In 1929, Edwin Hubble published his groundbreaking research analyzing the light from distant galaxies. He observed that these galaxies were receding from us at a speed proportional to their distance – this relationship is known as Hubble's Law.

Mathematically, Hubble’s Law can be expressed as: v = H₀d , where *v* is the recession velocity (m/s), *H₀* is the Hubble constant (s/m), and *d* is the distance to the galaxy (m).

v = H₀d

Evidence for Expansion

Hubble’s Law isn't just based on redshift; it’s supported by several other lines of evidence. The Cosmic Microwave Background (CMB) radiation, a relic from the Big Bang, provides strong confirmation.

Furthermore, observations of distant supernovae show that they are dimmer than expected, indicating that they are further away than predicted by a static universe.

Planetary Orbits

A planet's orbit is determined primarily by its distance from the Sun and its velocity.

The closer a planet is to the Sun, the faster it moves in its orbit due to stronger gravitational forces.

Accelerated Expansion

Recent observations have revealed that the universe’s expansion is not only happening but *accelerating*. This acceleration is attributed to a mysterious force called dark energy.

Dark energy comprises approximately 68% of the universe's total energy density, and its nature remains one of the biggest unsolved problems in physics.

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