In movies you usually see an asteroid belt full of rocks close to one another. In reality, this would be an unstable situation because objects that are close to one another will collide often as they ...

Angular measurements (degrees) do not directly correlate with the actual physical distances between celestial bodies. Apparent size, as measured in degrees, is dependent on both the object's physical ...

Have you ever wondered how astronomers measure the distance to other objects in the universe? How do they make claims that this nebula is 1,500 light years distance or that galaxy is 2.5 million light ...

When astronomers stare into the deep universe or at the spectra of a distant star subtly hiding an exoplanet, they need to account for its movement. That relies on two phenomena — redshift and ...

Forbes contributors publish independent expert analyses and insights. The Universe is out there, waiting for you to discover it. If there's one thing we've experimentally determined to be a constant ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Astronomers have directly measured a blazing-bright object on the opposite side of the Milky Way, ...