Learn the differences between our Earth, the Sun and the Moon. Then explore how together they create day and night and our different seasons with their orbits.

The changes in orbit and tilt change the degree to which the Earth is exposed to the sun, ... By comparing it to today’s ... 5. 30 planets the size of ours could fit between the Moon and Earth. 6.

Let's say we want to build a model of the sun and Earth alone. Earth has a radius of about 6,371 kilometers (3,959 miles), but let's represent this with a marble 1 centimeter in diameter.

On hearing the words "city killer" and "asteroid" in the same sentence, you'd be forgiven for thinking something bad is about to happen.

Venus will pass between the Earth and sun on Saturday during what's called an inferior conjunction.. The moment of conjunction will happen at around 9 p.m. EDT, but don't plan on seeing the linkup.

Amazon is offering the LEGO Technic Planet Earth and Moon in Orbit 42179 for only $59.95, a savings of 20%. With this deal, you're paying about 11 cents per brick.

Another month(ish), another full moon: and this one is very special. As the moon, sun and planet Earth align in space, a reddish hue will be refracted onto the full moon’s surface. Here’s what ...

While parts of the Earth saw a total lunar eclipse, the Blue Ghost lunar lander captured stunning imagery of a solar eclipse on Friday. See the rare view here.

The moon’s outer atmosphere is very thin, and it does not have enough air to hold onto the sun’s heat. During the day, temperatures on the moon can reach about 120 degrees Celsius. At night ...

The moon will appear red or orange as the Earth's inner shadow blocks most sunlight. Michigan sky gazers, get ready for a special sight with a total lunar eclipse coming in March.