Matthias Shcleiden

Robert Hooke

Anton Van Leuweenhoek

Theodor Schwann

Class: 1

Date: April 7/2010

Item:

With the help of internet or consulting books
1 What are asteroids?

One of many rocky objects, with widths from over 900 kilometres to less than one kilometre, which circle the sun.

2 What is a comet?

An object that moves around the sun, usually at a great distance from it, that is seen on rare occasions from Earth as a bright line in the sky.

3 What is a planet?

A planet is a celestial body orbiting a star or stellar remnant that is massive enough to be rounded by its own gravity.

4 What is a rocky planet?

"This is the first confirmed rocky planet in another system," astronomer Artie Hatzes told CNN, contrasting the solid planet with gaseous ones like Jupiter and Saturn.
But "Earthlike" is a relative term.
The planet's composition may be similar to that of Earth, but its environment is more like a vision of hell, the project's lead astronomer said

5 What is Gaseous Planet?

Gaseous planets are in our own solar system, Mars is NOT a gaseous planet. Where as some of the others are like Saturn and Jupiter.

6 What is Geocentric Theory? make a picture

7 What is heliocentric theory? make a picture

But, on the other hand, there had been planted, long before, the germs of a heliocentric theory. In the sixth century before our era, Pythagoras, and after him Philolaus, had suggested the movement of the earth and planets about a central fire; and, three centuries later, Aristarchus had restated the main truth with striking precision.

8 Who was Ptolemy?
One of the most influential Greek astronomers and geographers of his time, Ptolemy propounded the geocentric theory in a form that prevailed for 1400 years. However, of all the ancient Greek mathematicians, it is fair to say that his work has generated more discussion and argument than any other. We shall discuss the arguments below for, depending on which are correct, they portray Ptolemy in very different lights. The arguments of some historians show that Ptolemy was a mathematician of the very top rank, arguments of others show that he was no more than a superb expositor, but far worse, some even claim that he committed a crime against his fellow scientists by betraying the ethics and integrity of his profession.

9Who was Nicolas Copernicus?
Nicolas Copernicus (19 February 1473 – 24 May 1543) was the first astronomer to formulate a comprehensive heliocentric cosmology, which displaced the Earth from the center of the universe.[1]

The universe

Class: 6

Date: March 24/2010

Item: The universe

Nebula: Is a cloud of dust, hydrogen gas, helium gas and plasma.

Nebula attract cosmic gas and dust, where they are very large form stars and planets.The most important nebula is called Crab Nebula.

Constellations: They are totally imaginary things in the space that the astronomer and poets have made up over the past 6000 years.

Are groups of stars that have joined with imaginary lines, the form figures and they are used in navigation and guidance. Some constellations are:

Orion The great bear

The names correspond to the Greek mythology.

Pulsars: It is a neutron star this; this is one of the posible end of a star.

The internal activity of this star is so strong that electrons and protoms unite to form neutrons.

Quasar: there are the largest sources of energy in the universe, are as bright such as a hundred galaxies but less large

The celestial bodies

Class:5

Date: March 10/2010

Item: The celestial bodies

THE CELESTIAL BODIES

can be

Luminous celestial bodies Non-luminous celestial bodies

There are There are

-Galaxies -Planets

-Stars -Asteroids

-Nebula -Comets

-Pulsars -Satellite

-Quasars -Meteorite

-Constellation

THE SUPER RED GIANT

When a super red giant die; can be that it change in:

-Black hole

-Quasar

-Pulsar

-Nebula

A nebula (from Latin: "cloud";[1] pl. nebulae or nebulæ, with ligature or nebulas) is an interstellar cloud of dust, hydrogen gas, helium gas and plasma. Originally nebula was a general name for any extended astronomical object, including galaxies beyond the Milky Way (some examples of the older usage survive; for example, the Andromeda Galaxy was referred to as the Andromeda Nebula before galaxies were discovered by Edwin Hubble). Nebulae often form star-forming regions, such as in the Eagle Nebula.

Pulsar
From Wikipedia, the free encyclopedia
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This article is about a type of neutron star. For Pulsar, see Pulsar (disambiguation).

Cycle of pulsed gamma rays from the Vela pulsar.Pulsars are highly magnetized, rotating neutron stars that emit a beam of electromagnetic radiation. The observed periods of their pulses range from 1.4 milliseconds to 8.5 seconds.[1] The radiation can only be observed when the beam of emission is pointing towards the Earth. This is called the lighthouse effect and gives rise to the pulsed nature that gives pulsars their name. Because neutron stars are very dense objects, the rotation period and thus the interval between observed pulses is very regular

Quasar
From Wikipedia, the free encyclopedia
Jump to: navigation, search
This article is about the astronomical object. For other uses, see Quasar (disambiguation).

An artist's impression of a growing quasar.A quasi-stellar radio source (quasar) is a very energetic and distant galaxy with an active galactic nucleus. Quasars were first identified as being high redshift sources of electromagnetic energy, including radio waves and visible light, that were point-like, similar to stars, rather than extended sources similar to galaxies.