Mr. T's Science Scene

The Universe and Gravity

The universe is a system (an organized group of components (things that make up that system) that, together, form a whole.  The universe consisists of millions of components including planets, moons, sun, stars, galaxies, black holes, asteroids, meteoroids, comets, nebulae, planetary debris (rings, ice, rock), human debris (satellites, ships, space stations, debris).

All of the components of the universe are acted upon by gravity.  Gravity is the attractive force between two obejcts.  Gravity is influenced by: . . . . READ MORE


Stars, Galaxies, and Gravity

Nebulae are ENORMOUS clouds of gas and other materials (dust).  As smaller materials and gas are attracted to larger materials (remember, more mass equals greater gravitational force) the nebulae form larger and larger chunks of material and gas.  Over time, unimaginable gravitational forces crush down on larger chunks, crushing atoms together.  This crushing of atoms in a smaller . . . . READ MORE


Gizmo Stars

Nebulae are ENORMOUS clouds of gas and other materials (dust).  As smaller materials and gas are attracted to larger materials (remember, more mass equals greater gravitational force) the nebulae form larger and larger chunks of material and gas.  Over time, unimaginable gravitational forces crush down on larger chunks, crushing atoms together.  This crushing of atoms in a smaller . . . . READ MORE


Orbits

When a body in space goes around another body in space we say that it is orbiting that second body.  Moons orbit around the planets, planets orbit around a star, stars may orbit around other stars, and some galaxies orbit around each other.

Many years ago it was throught that all things we can see in space orbit around the Earth. . . . . READ MORE


Galaxies

Of all the super weird stuff in our universe, the fact that some of the stars we see in the sky are galaxies far, far away has to be one of the best!

Galaxies contain huge amounts of stars, dust, gas, planets, moons, and other space bodies.  They are categorized into three different types: spiral, elliptical, and irregular.  Many of the galaxies contain similar things but their shape and contents really set them apart. . . . . READ MORE


Technology and Data

Technology has come a long way over the last few hundred years!  With regards to space, the first moonwalk was July 20th, 1969.  This was just 350 years after the development of a telescope by a dutch eyeglass maker who could magnify objects 3x and then Galileo, 9 years later, who made one of his own that could magnify things up to 20x.  Galileo was the first to doument objects in the night sky including the craters of the moon, the Milky Way, the rings of Saturn, and the moons of Jupiter. . . . . READ MORE


Planet Information . . . . . READ MORE


Earth's Seasons

The Earth has many seasons.  In this part of the world, we experience four of them, Summer, Fall, Winter, and Spring.

Many adults and students have the misconception that the seasons (temperature) are caused by how close or far we are from the sun.  They believe that Winter is caused by our planet being further away from the sun in it's orbit and that summer is when we are closer to the sun.  In fact, just the opposite is true!  We are closer to the sun during the Winter and further from the sun during Summer.  How is this possible?

Seasons are caused, not by our distance from the sun, but by the tilt of the Earth.. . . . . READ MORE


Sun Lab

The sun lab is meant to help you explore the concept of the seasons and how the sun affects the termperature of the Earth at different times of the year.  In this case, we explored Summer (90 degree light) and Winter (23.5 degree light).

Your 90 degree data table shold have shown a smattering of temperature readings that were inside a "circle" of light.  These readings. . . . . READ MORE