Rømer used his observations to estimate the speed of light. Since the size of the solar system and Earth's orbit wasn't yet accurately known, argued a 1998 paper in theAmerican Journal of Physics, he was a bit off. But at last, scientists had a number to work with. Rømer's calc...
Create your own DIY planetarium from a few simple supplies and explore constellations found in the Milky Way galaxy.
And contrary to popular belief, our solar system does not sit at the center of it. This newfound knowledge highlights the sheer vastness of the universe, as the Milky Way is just one among countless galaxies that populate the cosmos. Now let's look at some early theories about our humble ...
Similarly, where you’re located in the world will determine where the Milky Way will be in the sky. In the northern hemisphere, the galactic center is visible in the southern half of the sky while in the southern hemisphere, it can be positioned directly overhead, particularly in the peak...
Because the Moon has no protective atmosphere, early settlers will cover their modules with up to 2 meters of lunar soil, or regolith, to protect them from solar radiation. These modules may give way to larger structures positioned beneath regolith archways or buildings made of lunar concrete ...
Clarke's concept -- a communications satellite positioned in Earth's orbit so it could bounce radio waves from one location to another -- into a feasible design. In 1961, NASA gave Hughes a contract to build the Syncom (synchronous communication) series of satellites. In July 1963, Rosen ...
hangs in midair on eighteen cables. It is a bow-shaped structure 328 feet long that can be moved side to side and positioned anywhere up to twenty degrees from the vertical to focus on objects in deep space. Aiming the feed at a certain point above the dish enables radio emissions o...
Our planet and solar system are in a Goldilocks-type zone where there are no stars close enough to our cosmic neighborhood that are big enough to turn into stellar-mass or supermassive black holes. As for the opposite side of the size spectrum? Well, the jury is still out. The aforementio...
How will the catastrophe take place? Will it affect only the world and the solar system; or will it cover the entire Universe? Will the doom of the world and that of the solar system and the universe happen at the same time? “Do they then only wait for the Hour, - that it should...
Astronomers are expecting a “new star” to appear in the night sky anytime between now and September, and it promises to be a once-in-a-lifetime celestial sight, according toNASA. The expected brightening event, known as a nova, will occur in the Milky Way’s Cor...