Gravity
Gravity is a physicalforce of attractionfound between objects that have mass. On Earth,it is gravity - the attraction of the earth that pulls objects down, gives themweight. In fact, gravity is also the reason for the very existence of the Earth and other celestial bodies. Without gravity, matter would not have formed into stars and
galaxies. Gravity also keeps
the Earth, moon and the other
planets in their orbits. A lot is
now known about the properties
of gravity, but why there is gravitational force remains an important topic of scientific research.
Big Bang
The Big Bang is the scientifictheory that the entire Universe emerged from an enormously dense and hot state in one huge explosion about 13.7 billion years ago.Many scientists studying space believe that, since this event, space itself has been expanding with the passage of time, carrying the galaxies with it away from the center of the universe. Observations of all objects in space, and of the existence of cosmic microwave background radiation everywhere in space, seem to prove this theory
is
correct.
This
shows
the Big
Bang at
bottom
& the
universe
now at
top. / Time
In the history of science, time was seen as a basic quantity of measurement that does not take up space. It is considered the 4th dimension, after length, width & height. Einstein changed all that when his theory of special relativityshowed how extremely high speed motion can warp time and space. His work with subatomic particles helped him create the idea of timespace. Because of Einstein, scientists now think of time as “an event that similar clocks, not in motion themselves, measure identically and simultaneously.”
Scientists think
time would look
like this, if we could
see it. It is the 4th
dimension of
measurement after
1-D, 2-D & 3-D.
General Relativity
General relativity was developed by Einstein in the years 1911 - 1915. General relativity is a geometrical theory which says that the presence of mass and energy "curves" spacetime. This curving affects the path of free particles (and even the path of light). The theory uses mathematics to studygravitation without referring togravity. "Gravitation" is the mutual attraction between bodies of matter in space away from Earth. This theory is important for astronomers wanting to understand events in deep space.
Spacetime
may look &
bend like this.
IMPORTANT THEORIES for SPACE SCIENCE
Gravity
Gravity is a physicalforce of attractionfound between objects that have mass. On Earth,it is gravity - the attraction of the earth that pulls objects down & gives themweight. In fact, gravity is also the reason for the very existence of the Earth and other celestial bodies. Without gravity, matter would not have formed into stars and
galaxies. Gravity also keeps
the Earth, moon and the other
planets in their orbits. A lot is
now known about the properties
of gravity, but why there is gravitational force remains an important topic of scientific research.
Big Bang
The Big Bang is the scientifictheory that the entire Universe emerged from an hugedense and hot state in one huge explosion about 13.7 billion years ago.Many scientists studying space believe that, since this event, space itself has been expanding with the passage of time, carrying the galaxies with it away from the center of the universe. Observations of all objects in space, and of the existence of cosmic microwave background radiation everywhere in space, seem to prove this theory
is correct.
This
shows
the Big
Bang at
bottom
& the
universe
today at
top. / Time
In the history of science, time was seen as a basic quantity of measurement that does not take up space. It is considered the 4th dimension, after length, width & height. Einstein changed all that when his theory of special relativityshowed how extremely high speed motion can warp time and space. His work with subatomic particles helped him create the idea of spacetime. Because of Einstein, scientists now think of time as “an event that similar clocks, not in motion themselves, measure identically and simultaneously.”
Scientists think
time would look
like this, if we could
see it. It is the 4th
dimension of
measurement after
1-D, 2-D & 3-D.
General Relativity
General relativity was developed by Einstein in the years 1911 - 1915. General relativity is a geometrical theory which says that the presence of mass and energy"curves" spacetime. This curving affects the path of free particles (and even the path of light). The theory uses mathematics to studygravitation without referring togravity. "Gravitation" is the mutual attraction between bodies of matter in space away from Earth. This theory is important for astronomers wanting to understand events in deep space.
Spacetime
may look &
bend like this.
IMPORTANT THEORIES for SPACE SCIENCE
GRAVITY
Gravity is a physical force of attraction found between objects that have mass. On Earth,it is gravity - the attraction of the earth that pulls objects down, gives them weight. In fact, gravity is also the reason for the very existence of the Earth and other celestial bodies. Without gravity, matter would not have formed into stars and galaxies. Gravity also keeps the Earth, moon and the other planets in their orbits. A lot is now known about the properties of gravity, but why there is gravitational force remains an important topic of scientific research.
TIME
In the history of science, time was seen as a basic quantity of measurement that does not take up space. It is considered the 4th dimension, after length, width & height. Einstein changed all that when his theory of special relativity showed how extremely high speed motion can warp time and space. His work with subatomic particles helped him create the idea of timespace. Because of Einstein, scientists now think of time as “an event that similar clocks, not in motion themselves, measure identically and simultaneously.”
Scientists think time would look
like this, if we could see it. It is the 4th
dimension of measurement after
1-D, 2-D & 3-D.
THE BIG BANG
The Big Bang is the scientifictheory that the entire Universe emerged from an enormously dense and hot state in one huge explosion about 13.7 billion years ago.Many scientists studying space believe that, since this event, space itself has been expanding with the passage of time, carrying the galaxies with it away from the center of the universe. Observations of all objects in space, and of the existence of cosmic microwave background radiation everywhere in space, seem to prove this theory is correct.
This shows the Big
Bang at bottom & the
universe now at top.
GENERAL RELATIVITY
General relativity was developed by Einstein in the years 1911 - 1915. General relativity is a geometrical theory which says that the presence of mass and energy "curves" spacetime. This curving affects the path of free particles (and even the path of light). The theory uses mathematics to study gravitation without referring to gravity. "Gravitation" is the mutual attraction between bodies of matter in space away from Earth. This theory is important for astronomers wanting to understand events in deep space.
Spacetime may look & bend like this.
1
Science in Hawai‘i/ Nā Hana Ma Ka Ahupua‘a – A Culturally Responsive Curriculum Project
Retrieved and adapted 2.15.06 from: