ASTRONOMİ VE UZAY BİLİMİ

Astronomy and Space Science

Astrophysics

GalaxyA galaxy is a massive,

gravitationally bound system consisting of stars, stellar remnants, an interstellar

medium of gas and dust, and an important but poorly understood component

called dark matter.

The Milky Way GalaxyThe Milky Way galaxy is a spiral galaxy consisting of

over 400 billion stars, plus gas and dust arranged

into three general components as shown to the

left: The halo - a roughly spherical distribution which contains the oldest stars in

the Galaxy, The nuclear bulge and

Galactic Center. The disk, which contains the

majority of the stars, including the sun, and

virtually all of the gas and dust

ACCRETION: This is the growth of a massive object by gravitationally attracting more matter, typically gaseous matter in an accretion disc. This is also a phenomena that resulted in the formation of many of the moons orbiting the planets in our solar system.

MOON: All moons have one thing in common – They are all “natural satellites held in position by gravity”

Definitions and Terms

GALAXY: A galaxy is a massive, gravitationally bound system consisting of stars, stellar remnants, an interstellar medium of gas and dust, and an important but poorly understood component called dark matter.

Communication on Earth using Satellites

Communication on Earth using Satellites

• Audio

• Radio-waves

• “Line-of-Sight”

• Signal bouncing and bending

• Satellites

Communication on Earth using Satellites

Communication on Earth using Satellites

Communication on Earth using Satellites

Asteroid 2012-DA14

Asteroid 2012-DA14

0001-120326asteroid_2012_DA14-90.mp3

Asteroid 2012-DA14

Asteroid 2012-DA14

Asteroid 2012-DA14

Asteroid 2012-DA14

Asteroid 2012-DA14

Asteroid 2012-DA14