Earth’s Moon
Earth and the Moon are more like a double planet than a planet and a moon. The Moon is quite
Earth
But it was only in the sixteenth century, around the time of Copernicus, that people began to see Earth as
Scale Models
Without being informed of the expected product, the students will make a Play-doh model of the Earth-Moon system, scaled to
Why is the Moon covered with craters?
Perhaps a better question might be why isn’t Earth covered with craters? Both Earth and Moon — and the other
What causes the bright halo that sometimes surrounds the Moon?
This bright ring of light is quite common. It’s related to the same process that creates rainbows: refraction. In this
What causes the bright halo that sometimes surrounds the Moon? Read More »
Who built the first observatory?
Observatories, like so much of astronomy, are truly ancient features of human culture; retracing the steps of the first person
Why does the Moon look bigger at the horizon?
The “Moon illusion,” in which the Moon appears larger than normal when close to the horizon, is not the result
What causes tides?
For the most part, the rise and fall of the tides is caused by the gravitational influence of the Moon.
How often do all the planets line up?
Alignments of the fast-moving inner planets can occur as regularly as every few months or so, while groupings of the