Vesto Slipher was not well known, but his groundbreaking observations helped uncover one of astronomy’s most fundamental relationships. Skip to content. Introducing the all-new Astronomy.com Forum!

Vesto Slipher, (1917): Proc. Amer. Phil. Soc., 56, 403. The story of the expanding Universe goes back nearly 100 years, to when Edwin Hubble first discovered individual stars of a specific type ...

Beginning in 1904, the American astronomer Vesto Slipher used the Doppler technique with a 24-inch telescope at the Lowell Observatory in Flagstaff, Arizona. He found that nebulae, including ...

The second key was the work of Vesto Slipher, who had investigated the spiral nebulae, before Hubble's Andromeda discovery. These bodies emit light which can be split into its component colors on a ...

We've known the universe is expanding for a long time. The first solid paper demonstrating cosmic expansion was published by Edwin Hubble in 1929, based on observations made by Vesto Slipher ...

In 1929 Edwin Hubble published the first solid evidence that the universe is expanding. Drawing upon data from Vesto Slipher and Henrietta Leavitt, Hubble demonstrated a correlation between ...

Hubble got the lion’s share of the credit for this discovery, but Lowell Observatory astronomer Vesto Slipher, who noticed the same phenomenon but didn’t publish his data, also anticipated ...

In the 1910s, Vesto Slipher at the Lowell Observatory in Arizona discovered that many spiraling nebulae were racing away from us at astonishing speeds, far faster than any other celestial object.

The director of the facility, renowned astronomer Vesto Slipher, had hired Tombaugh based on some high-quality sketches of Jupiter and Mars he sent to the observatory.

In 1913, US astronomer Vesto Slipher discovered Andromeda was getting closer to the Milky Way — even before we knew it was a separate galaxy, or how far away it was.