Definition: Space includes
the entire universe—planets,
moons, stars, and galaxies.
Since its birth in the Big Bang,
space has been expanding
outward continuously.
When did the
Hubble go intoorbit? Find out
on pages 20-
Which rovers
landed
on Mars in 2004?
Find out
on pages 26-About 500 people have flown in space since 1961.
A teaspoonful of material from a neutron star would weigh 10 billion tons on the Earth.
A black hole is a region of space where gravity is so strong that nothing can escape.
The temperature at the center of the Sun is 27,000,000°F (15,000,000°C).
When a dying star explodes, it releases as much energy as the Sun emits in its lifetime.
SPACE