Space flight is important for several reasons: it allows scientists to study Earth as a planet from above the atmosphere; it permits observation of distant planets, stars, and galaxies without atmospheric filtering; and it enables direct sampling of other worlds. Space flight also provides a microgravity environment for investigating fundamental states of matter and forces.

2. Why the space fligth are important?
• Space flight is important for many reasons. Space flight
carries scientific instruments and human researchers high
above the ground, permitting us to see Earth as a planet
and to study the complex interactions of atmosphere,
oceans, land, energy, and living things. Space flight lifts
scientific instruments above the filtering effects of the
atmosphere, making the entire electromagnetic
spectrum available and allowing us to see more clearly
the distant planets, stars, and galaxies. Space flight
permits us to travel directly to other worlds to see them
close up and sample their compositions. Finally, space
flight allows scientists to investigate the fundamental
states of matter—solids, liquids, and gases—and the
forces that affect them in a microgravity environment.

3. What is
Gravity?
• Gravity is a force that governs
motion throughout the universe. It
holds us to the ground, and it
keeps the moon in orbit around
Earth and Earth in orbit around
the sun.

4. Newton and the Gravity Characteristics
• The nature of gravity was first
described by Sir Isaac Newton,
more than 300 years ago. Gravity is
the attraction between any two
masses, most apparent when one
mass is very large (like Earth). The
acceleration of an object toward
the ground caused by gravity
alone, near the surface of Earth, is
called "normal gravity," or 1g. This
acceleration is equal to 32.2
ft/sec2 (9.8 m/sec2).

5. Gravity
Hypergravity
+G
Gravity
G
Microgravity
-G

6. Einstein and the
Gravity
Object with mass cause
space to become warped.
The force of gravity is present, but
there is not real. The gravity is a
sensation or feeling of weight.
Microgravity occurs when an object
or person is falling freely

7. Creating Microgravity in
the planet Earth

9. Research in microgravity, International Space Station
• Fluid physics
• Fundamental physics
• Combustion
• Biology
• Material sciences
Astrophysics
• Chemistry and
biochemistry

10. • A primary function of operating in space is the deployment and
retrieval of payloads. NASA uses a deployment system to eject
payloads such as cube satellites from the International Space Station.
In recent years, a deployment system encountered trouble failing to
release satellites when commanded, and inadvertently or
prematurely releasing satellites. Work to improve the mechanics and
powering of the system has been a focus for NASA and its partners.
Microgravity University for Educators (MgUE) invites teachers and
students to be a part of the team to improve the solution

11. Satellite Launching Experimental Device (SLED)

13. Good Look