GRAVITY235 SCIENCE GENIUS
Sir Isaac Newton was the
first person to figure out
that the force of gravity
keeps the Moon trapped in
orbit around the Earth.
Center of gravity
Gravity pulls down
on an object through a
point called the center of
gravity. An object will tip
over if its center of gravity is
too high or moves outside the
base of the object. All-terrain
vehicles have a very low center
of gravity so they can drive up
and down steep slopes.EXPLODING STARS
Stars are powered by nuclear reactions. In the
core of the Sun, hydrogen atoms combine to
form helium, releasing extreme heat. When the
Sun runs out of hydrogen in its core, the core
will collapse. The collapse of the core of a larger
star might release enough energy that the star is
seen as a supernova. The outer parts of the star
are blown into space.Vomit Comet Astronauts appear to float
weightlessly in an aircraft as the plane
follows the path that an object in free fall
would take. In fact, the astronauts and
the aircraft are accelerating at the same
rate, but there is no contact between them.
The plane is nicknamed the “Vomit Comet”
because it makes some astronauts feel sick. WARP FACTOR Albert
Einstein came up with another
theory to explain gravity. He
suggested that a big mass, such as
a planet, warps space and time
in the same way as a heavy ball
resting on a rubber sheet. RELATIVE SUCCESS
Einstein came up with his
theory in 1916. A few years
later, astronomers showed he
was right, when light from a
distant star was shown to
bend as it passed the Sun. APPLE IDEAS
Legend has it that
Newton came up with
his theories about
gravity when he saw
an apple fall from a
tree. He showed that
the force that pulled
the apple to the ground
was the same force that
pulled the Moon into
the Earth’s orbit.The warping effect creates
the force of gravity.NEWTON EINSTEIN
SCIENCE