A Satellite is any object that orbits the Earth or other planets and stars. Satellites can be natural or they can be artificial satellites made by humans.
Some early satellites launched into orbit were Vanguard III and Explorer VII in 1959, Pioneer 5, Tiros I and Discoverer XIII, all in 1960.
Artificial Satellites orbit the Earth in various orbits and with different periods of revolution.
The moon is a natural satellite of the Earth and the Earth could be considered a natural satellite of the Sun.
TARANTULA NEBULA
⚜ What is the Tarantula Nebula? ⚜
The Tarantula Nebula is a cloud of gas and dust within the Milky Way.
The Tarantula Nebula lies near the Large Megellanic Cloud in the Southern Skies.
LARGE MAGELLANIC CLOUD
⚜ What is the Large Magellanic Cloud? ⚜
The Large Magellanic Cloud is a companian Galaxy to the Milky Way and is visible in the Southern Skies.
QUASARS
⚜ What are Quasars? ⚜
Quasars are very bright radio objects at very large distances from the Earth.
Quasars are believed to be Black Holes, which emit no visible light.
PULSARS
⚜ What are Pulsars? ⚜
Pulsars are Neutron stars that emit burst of radio waves.
DARK MATTER
⚜ What is Dark Matter? ⚜
Dark Matter is the matter in the Universe that is not visible and cannot easily be detected.
BLACKBODY
⚜ What is a Blackbody? ⚜
A Blackbody is a perfect absorber and emitter of radiation and does not reflect radiation.
The Planck theory of blackbody radiation is the origin of the quantum theory.
SUMMER SOLSTICE
⚜ What is the Summer Solstice? ⚜
The Summer Solstice occurs about June 21.
At the Summer Solstice, the Northern Hemisphere experiences the longest day of the year and the Southern Hemisphere experiences the shortest day of the year.
At the Summer Solstice, the Sun is highest in the sky in the Northern Hemisphere.
At the Summer Solstice, Summer begins in the Northern Hemisphere and Winter begins in the Southern Hemisphere.
TRIVIA
🔔 QUESTION : At the Summer Solstice, where are the Sun's rays perfectly vertical to the Earth?
💡 Hover or Tap for the ANSWER! 💡
The Tropic of Cancer is where the Sun's rays are perfectly vertical to the Earth at the Summer Solstice.
COSMIC BACKGROUND RADIATION
⚜ What is the Cosmic Background Radiation? ⚜
The Cosmic Background Radiation is a uniform background noise in outer space.
The Cosmic Background Radiation is believed to be the residual radiation from the Big Bang that initiated the Universe.
BROWN DWARF
⚜ What is a Brown Dwarf? ⚜
A Brown Dwarf is a dim star that has not enough mass to trigger hydrogen fusion.
COSMIC RAY
⚜ What are Cosmic Rays? ⚜
Cosmic Rays are charged particles moving at close to the speed of light.
Cosmic Rays pass through the Earth and can originate from the Sun but most cosmic rays originate from outside the solar system.
