Until 1838, Astronomers had little idea of the true size of the Universe. But in that year, Friedrich Bessel used a technique called the parallax method to make the first successful measurement of the distance to a star.
Modern astronomers have many different ways of figuring out how far away an object is, but they all depend ultimately on the parallax method.
As the Earth orbits the Sun, the nearer stars seem to move from side to side against the background of more distant stars. The angle through which the star moves over a period of six months is called its parallax.
Knowing this angle, astronomers can use simple geometry to calculate the star’s distance. The smaller the parallax, the further away the star.
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Exploring the Moon
People have dreamed of exploring the Moon for hundreds of years. The United States and Russia made the dream a reality in the middle of the 20th century. In 1959, Luna 1- the first spacecraft to leave the Earth’s gravity – was launched toward the Moon. A decade of intense space activity followed as Russian and American probes, robots, and crewed craft were sent to investigate and land on the l...
People have dreamed of exploring the Moon for hundreds of years. The United States and Russia made the dream a reality in the middle of the 20th century. In 1959, Luna 1- the first spacecraft to leave the Earth’s gravity – was launched toward the Moon. A decade of intense space activity followed as Russian and American probes, robots, and crewed craft were sent to investigate and land on the l...
Exploring the Planets
A planetary spacecraft has basic instruction programmed into its onboard computers at launch. However, most of the details are sent by controllers on Earth at a later stage, because journeys are often several years long. After discovering a problem with the radio transmissions between Cassini and Huygens, mission controllers were able to change their plans.
A planetary spacecraft has basic instruction programmed into its onboard computers at launch. However, most of the details are sent by controllers on Earth at a later stage, because journeys are often several years long. After discovering a problem with the radio transmissions between Cassini and Huygens, mission controllers were able to change their plans.
Star Map - Southern Hemisphere September to February
Polar Star has sufficient body ability to ingest the elevated-controlled ice slamming normal to her operations. The shell plating and cohorted interior uphold structure are created from steel that has particularly great flat-temperature quality. The part of the body outline to slam ice is 1-3/4 creeps (45 mm) thick in the bow and stern areas, and 1-1/4 crawls (32 mm) thick amidships. The frame...
Polar Star has sufficient body ability to ingest the elevated-controlled ice slamming normal to her operations. The shell plating and cohorted interior uphold structure are created from steel that has particularly great flat-temperature quality. The part of the body outline to slam ice is 1-3/4 creeps (45 mm) thick in the bow and stern areas, and 1-1/4 crawls (32 mm) thick amidships. The frame...
Vostok 1's Mission
Vostok 1 (Russian: Восток-1, East 1 or Arrange 1) was the first spaceflight in the Vostok system and the first human spaceflight in history. The Vostok 3KA space apparatus was started on April 12, 1961. The flight took Yuri Gagarin, a cosmonaut from the Soviet Union, into space. The flight checked the first time that a human dropped in space, and in addition the first orbital flight of a manne...
Vostok 1 (Russian: Восток-1, East 1 or Arrange 1) was the first spaceflight in the Vostok system and the first human spaceflight in history. The Vostok 3KA space apparatus was started on April 12, 1961. The flight took Yuri Gagarin, a cosmonaut from the Soviet Union, into space. The flight checked the first time that a human dropped in space, and in addition the first orbital flight of a manne...
Astronomy 101 Collection
According to Quantum mechanics, electrons bound to an atom can only have particular values of energy; they are unique to that element. Absorption or emission of a photon of light by the atom occurs when the energy of that photon matches the difference between two of these energy levels. The gravitational pull of any object gets weaker the further you move from the object. Thus, the Moon p...
According to Quantum mechanics, electrons bound to an atom can only have particular values of energy; they are unique to that element. Absorption or emission of a photon of light by the atom occurs when the energy of that photon matches the difference between two of these energy levels. The gravitational pull of any object gets weaker the further you move from the object. Thus, the Moon p...
What is it Like Inside a Black Hole
Black holes are prisons of Light, where gravity is so strong that nothing can escape. But they have even more bizarre effects: a block hole’s gravity distorts space and time, and the laws of physics break down at its center. No one can look inside a black hole, but mathematicians can explore them using Einstein’s theory of gravity. Objects that fall into a black hole are ‘spaghettified...
Black holes are prisons of Light, where gravity is so strong that nothing can escape. But they have even more bizarre effects: a block hole’s gravity distorts space and time, and the laws of physics break down at its center. No one can look inside a black hole, but mathematicians can explore them using Einstein’s theory of gravity. Objects that fall into a black hole are ‘spaghettified...
The Milky Way in a Diagram
Home galaxy of Earth, the Milky way is a spiral – shaped system of a few hundred billion stars. Bright regions of recently formed stars highlight its arms, while older stars explode or expel their outer layers as beautiful planetary nebulae, then fade away and die. A thick swarm of orange and red stars marks the galactic bulge, encapsulating the star-packed galactic center.
Home galaxy of Earth, the Milky way is a spiral – shaped system of a few hundred billion stars. Bright regions of recently formed stars highlight its arms, while older stars explode or expel their outer layers as beautiful planetary nebulae, then fade away and die. A thick swarm of orange and red stars marks the galactic bulge, encapsulating the star-packed galactic center.
Apollo Lunar Module Ascent Stage Interior View Aft
The Lunar Module Ascent Stage Interior View contains many core parts that include the cabin Relief Dump valve, overhead hatch, drogue. The core module in the middle contains oxygen control module, Ecs LiOH cartridge storage, Water Control module, ECS LIOH Cartridge, Cabin Recirculation Assembly. The lower part of the module contains some light weight protocols like Coupling Data Unit, Portable Lif...
The Lunar Module Ascent Stage Interior View contains many core parts that include the cabin Relief Dump valve, overhead hatch, drogue. The core module in the middle contains oxygen control module, Ecs LiOH cartridge storage, Water Control module, ECS LIOH Cartridge, Cabin Recirculation Assembly. The lower part of the module contains some light weight protocols like Coupling Data Unit, Portable Lif...
Apollo Lunar Module Descent Stage
The Lunar module Descent stage would be the final module for the vehicle. The Stage consists of the Engine Mount, The Descent engine, the Structural Skin, the Insulation, the thermal and micrometeoroid shield, the forward interstate fitting, the oxidizer tank, the cable cutter, the ambient helium tank, the landing gear and finally the descent engine skirt.
The Lunar module Descent stage would be the final module for the vehicle. The Stage consists of the Engine Mount, The Descent engine, the Structural Skin, the Insulation, the thermal and micrometeoroid shield, the forward interstate fitting, the oxidizer tank, the cable cutter, the ambient helium tank, the landing gear and finally the descent engine skirt.
How Eclipses of the Sun Happen
In its 27 – day Orbit of the Earth, the Moon sometimes passes directly in front of the Sun and we see a solar eclipse. In one of the natural world’s most eerie, beautiful spectacles, the dark circle of the Moon gradually creeps over the Sun. Between two and five solar eclipses are visible from somewhere on the Earth each year. When the Moon is at its farthest from the Earth, it is not ...
In its 27 – day Orbit of the Earth, the Moon sometimes passes directly in front of the Sun and we see a solar eclipse. In one of the natural world’s most eerie, beautiful spectacles, the dark circle of the Moon gradually creeps over the Sun. Between two and five solar eclipses are visible from somewhere on the Earth each year. When the Moon is at its farthest from the Earth, it is not ...
List of All Space Missions to Different Planets and Beyond
Space examination or the Space missions is the disclosure and examination of space by system for space mechanics. Physical examination of space is administered both by human spaceflights and by robotic shuttle. While the observation of articles in space, rumoured to be Astro science, starts before reliable recorded history, it was the development of unbelievable and similarly profit...
Space examination or the Space missions is the disclosure and examination of space by system for space mechanics. Physical examination of space is administered both by human spaceflights and by robotic shuttle. While the observation of articles in space, rumoured to be Astro science, starts before reliable recorded history, it was the development of unbelievable and similarly profit...
Dwarf Planets Explained
After Pluto was discovered in 1930, it was regarded as the ninth major planet, although it was soon found to be very different from the others. It is smaller than Earth’s Moon and follows an elongated, titled orbit. In the 1990’s astronomers began to discover small bodies similar to Pluto beyond Neptune. Some, such as Eris, were larger then Pluto. In 2006, astronomers decided to define a ne...
After Pluto was discovered in 1930, it was regarded as the ninth major planet, although it was soon found to be very different from the others. It is smaller than Earth’s Moon and follows an elongated, titled orbit. In the 1990’s astronomers began to discover small bodies similar to Pluto beyond Neptune. Some, such as Eris, were larger then Pluto. In 2006, astronomers decided to define a ne...
NASA's Future Capsule
NASA has decided that the MPCV, or Multi-purpose Crew Vehicle, will be America’s next crewed spacecraft following the retirement of the space shuttle. The MPCV program is a refocus of the Orion Crew Vehicle Program, which has been in development since 2005.
NASA has decided that the MPCV, or Multi-purpose Crew Vehicle, will be America’s next crewed spacecraft following the retirement of the space shuttle. The MPCV program is a refocus of the Orion Crew Vehicle Program, which has been in development since 2005.
Protostar Evolutions
Protostar Evolution in detail contains a random amount of interstellar gaseous matter, mainly hydrogen, containing traces of dusts (ices, carbon, rocks).
Protostar Evolution in detail contains a random amount of interstellar gaseous matter, mainly hydrogen, containing traces of dusts (ices, carbon, rocks).
International Space Station Modules
A manned orbital research facility currently being assembled in outer space. Joint international project. Participating countries: Belgium, Brazil, Great Britain, Germany, Denmark, Spain, Italy, Canada the Netherlands, Norway, Russia, the United States, France, Switzerland, Sweden, Japan.
A manned orbital research facility currently being assembled in outer space. Joint international project. Participating countries: Belgium, Brazil, Great Britain, Germany, Denmark, Spain, Italy, Canada the Netherlands, Norway, Russia, the United States, France, Switzerland, Sweden, Japan.
Saturn V Apollo Flight Configuration
The Saturn V (declared "Saturn Five") was an American human-appraised expendable rocket utilized by NASA's Apollo and Skylab systems from 1967 until 1973. A multistage fluid-energized start vehicle, NASA started 13 Saturn Vs from the Kennedy Space Focus, Florida with no misfortune of group or payload. It remains the tallest, heaviest, and by and large weighty rocket ever carried to operatio...
The Saturn V (declared "Saturn Five") was an American human-appraised expendable rocket utilized by NASA's Apollo and Skylab systems from 1967 until 1973. A multistage fluid-energized start vehicle, NASA started 13 Saturn Vs from the Kennedy Space Focus, Florida with no misfortune of group or payload. It remains the tallest, heaviest, and by and large weighty rocket ever carried to operatio...
Planetary System (GER)
A planetary framework is a situated of gravitationally bound non-stellar questions in circle around a star or star framework. Ordinarily vocalizing, planetary frameworks portray frameworks with one or more planets, admitting that such frameworks may additionally comprise of figures for example predominate planets, space rocks, expected satellites, meteoroids, comets and planetesimals and addit...
A planetary framework is a situated of gravitationally bound non-stellar questions in circle around a star or star framework. Ordinarily vocalizing, planetary frameworks portray frameworks with one or more planets, admitting that such frameworks may additionally comprise of figures for example predominate planets, space rocks, expected satellites, meteoroids, comets and planetesimals and addit...
The Amount of Junk in Outer Space
How much damage can a space debris do ? An example of the damage caused, a tiny speck of paint from a satellite once dug, a pit in a space shuttle window nearly a quarter – inch wide. 1mm metal chip could do as much damage as a 0.22-caliber long rifle bullet. A pea-sized ball moving this fast is as dangerous as a 400 lb safe travelling at 60 mph. A metal sphere the size of a tennis ball is as l...
How much damage can a space debris do ? An example of the damage caused, a tiny speck of paint from a satellite once dug, a pit in a space shuttle window nearly a quarter – inch wide. 1mm metal chip could do as much damage as a 0.22-caliber long rifle bullet. A pea-sized ball moving this fast is as dangerous as a 400 lb safe travelling at 60 mph. A metal sphere the size of a tennis ball is as l...
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