How did a Cepheid variable star help Edwin Hubble prove the Andromeda Nebula was a galaxy? Roger BradySan Quentin, California ...

Astrophotographer Greg Meyer has captured a colorful view of the famous Trifid and Lagoon nebulas illuminated from within by radiation cast out by generations of energetic young stars.

Clearly, the Andromeda Nebula was a system of stars quite separate from the Milky Way, and in many ways comparable to it. From this simple observation, soon repeated for other starry nebulae, it ...

Take a deep breath: the universe is not just big it’s mind-bogglingly, practically scandalously huge. And it’s growing. A ...

In this way, he obtained some of the first high-resolution pictures of prominent deep-sky objects such as the Pleiades (M45), Andromeda, the Triangulum Galaxy (M33), the Veil Nebula, and dozens more.

As early as 1912, astronomers realized that the Andromeda galaxy, then considered just a nebula, was heading toward us—toward the Milky Way. A century later, astronomers using NASA’s Hubble Space ...

This NASA/ESA Hubble Space Telescope image features the spiral galaxy Messier 77, also known as the Squid Galaxy. CREDIT: ESA/Hubble & NASA, L. C. Ho, D. Thilker. Get the Popular Science daily ...

The Andromeda Galaxy and the Milky Way are the closest neighbors despite that incredible distance. Still, without a doubt, Andromeda is a larger galaxy, possibly twice the diameter of our Milky Way.

NASA has released new images of the Andromeda galaxy, "the most important nearby stellar island." Hotspots ranked Start the day smarter ☀️ Funniest cap messages Get the USA TODAY app ...

The first attested mention of a nebula comes from the Persian astronomer Abd al-Rahman al-Sufi, who wrote in 964 about a "little cloud" we know today as the Andromeda Galaxy.

It wasn’t until 1959 when the Soviet Luna 3 probe gave us our first glimpse of the Moon’s far side, and it wasn’t until 2019 when the Chang’e 4 mission made the first soft landing.

An important clue to which perspective was right seemed to be hidden in the nebulae—fuzzy smears of light ("nebula" means "fuzzy") whose nature had been a source of debate for centuries. Some ...