crossword

What is pluto?
Pluto was the smallest planet in our solar system. Pluto is to small to be a planet but to big to be a star.
Pluto has 5 moons called Charon, Styx, Nix, Kerberos, and Hydra. Charon is the biggest moon it is half the size of pluto

IS pluto a planet

Why is it not a planet?

It is not a planet because it is to small to have life it is 2,368km long earth has 12,742 km long it is smaller than our moon! Pluto is very, very cold. The temperature on Pluto is 375 to 400 degrees below zero. Pluto is probably covered with ice.

Why is it a planet?

It was called a planet because it still orbits the sun if it wasn’t a planet it would be stationary like the stars. It has enough mass to orbit the sun.

How Does Space Travel Effect The Human Body?

SHORT TERM...

Blood circulation

On Earth the system circulates fluids through the body, working against gravity to stop blood from pooling in the legs, and bringing blood to the brain. in space the system doesn't work as hard, triggering a fluid shift. astronauts experience puffy faces, headaches nasal congestion and skinny legs as a result.

Space sickness

Almost 40 percent of astronauts in space experience some sort of motion sickness. Along with vomiting, headaches and nausea. Caused in part by the blood circulation changes described above. this usually subsides within 3-4 days of being in space.

Lack of cleanliness

Water is carefully conserved in space because the crew must carry all of there supplies with them on the long journey into space. this makes keeping clean a challenge. astronauts will have moist towelettes for daily scrubbing and will only be able to shower rarely.

LONG TERM

Bone loss

Weightlessness trigures the human body to excrete calcium and phosphorus (in urine and feces)

resulting in rapid bone loss. in the time it takes to get to space and back, a crew members bone density loss will be equivalent to the time on earth. 

Radiation

Astronauts in space experience flashes of light

that appears behind their eyelids. whats happening

is the cosmic rays are slashing through their brains-

retinal flashes are merely a physiological marker. 

 

BY ISABELLA GREEN (:

                                                                       matariki

1. Matariki is the Māori name for the cluster of stars also known as the Pleiades For many Māori. Matariki literally means the 'eyes of god' (mata ariki) or 'little eyes' (mata riki).

Matariki has two meanings, both referring to a tiny constellation of stars; Mata Riki (Tiny Eyes) and Mata Ariki (Eyes of God).

Matariki is the Maori name for a group of seven stars known as the Pleiades star cluster. Some people think of Matariki as a mother star with six daughters, and it is often referred to as the Seven Sisters.

Matariki appears in the eastern sky sometime around the shortest day of the year, and is thought to determine how successful the harvest crop will be in the coming season. The brighter the stars, the more productive the crop will be.

                                                        Matariki begins to rise in the last few days of May, and this symbolises the coming of the Maori New Year. Some iwi (tribes) start celebrations when Matariki is first seen, however it is the first new moon after Matariki that officially signals the Maori New Year. Some people celebrate the New Year on the day the new moon rises, and others celebrate on the day after the new moon. Celebrations can last up to 3 days.

The Matariki new moon happens sometime in June.

Upcoming dates:

2014- 28 June.

2015 – 18 June.

What is the probability of  comet hitting the earth?

Most planets in the solar system with a visible solid surface have craters. On Earth there are very few because geological processes such as weathering soon destroys the obvious evidence. On bodies with no atmosphere, such as Mercury or the Moon, craters are everywhere.There is strong evidence of a period of intense cratering in the solar system that ended almost 4 billion years ago. Since that time cratering appears to have continued at a much slower  rate. The cause of the craters is impacts by comets and asteroids. Most asteroids follow circular orbits between the planets Mars and Jupiter, but all of these asteroids are perturbed, occasionally by each other and more regularly and dramatically by Jupiter. As a result some find themselves in orbits that cross that of Mars or even Earth. Comets on the other hand follow orbits that often come close to Earth or other major bodies to begin with. These orbits are greatly affected if they come anywhere near Jupiter. Over the eons every moon and planet finds itself in the wrong place in its orbit at the wrong time and suffers the insult of a major impact.

Every day thousands of tiny pebbles and grains of sand pelt the earth. but the earths atmosphere protects us from anything bigger.

Here is a clip of a commit hitting the earth from a movie called deep impact...

Here is a more true to life version of a commit hitting the earth



BY ISABELLA GREEN (: