Browse Items (201 total)

Hubble, Edwin, Edwin Hubble to American Philosophical Society Committee on Grants-in-Aid, May 28, 1937, on Slipher's search for a new planet, 1937-05-28

This is the copy of the letter Hubble sent in for the grant to search for a new planet. He emphasized that it would answer an important, ongoing…

Tags: Edwin Hubble, grant, new planet, V.M. Slipher

Hubble, Edwin, Edwin Hubble to V. M. Slipher, July 8, 1940, on a catalogue of velocities of nebulae, 1940-07-08

Hubble wrote to Slipher to inform him that Mount Wilson was constructing a catalog of radical velocities of extragalactic nebulae and their…

Tags: dispersion, Edwin Hubble, galaxies, galaxy, Nebula, nebulae, V.M. Slipher, velocity

Hubble, Edwin, Edwin Hubble to V. M. Slipher, August 2, 1940, on the requested spectrographs and related work, 1940-08-02

Hubble relates to Slipher that there is no rush to deliver the images and data as they are imposing on Slipher. He also relates that they are…

Tags: Astronomy, Edwin Hubble, galaxies, galaxy, Nebula, nebulae, spectrograph, V.M. Slipher, velocity

Hubble, Edwin, Slipher's Velocities

A list of velocities observed by V. M. Slipher in relation to nebulae/galaxies' movement to compare with Slipher's and Hubble's respective…

Tags: Astronomy, Edwin Hubble, galaxies, galaxy, Nebula, nebulae, spectrograph, V.M. Slipher, velocity

Hubble, Edwin, Edwin Hubble to V. M. Slipher, June 11, 1941, on the rotation of spiral galaxies and related theories, 1941-06-11

Hubble expresses thanks for Slipher's paper on the rotation of spirals and sent images Slipher requested with the letter, mentioning use of Slipher's…

Tags: Astronomy, Edwin Hubble, galaxies, galaxy, Nebula, nebulae, rotation, V.M. Slipher

Hubble, Edwin, Edwin Hubble to V. M. Slipher, July 27, 1942, on the draft of his paper "The Direction of Rotation of Spiral Nebulae", 1942-07-27

Hubble sent Slipher a copy of a revised paper for possible edits, emphasizing that he would revise it again based on specific spectrographic rotations…

Tags: Astronomy, Edwin Hubble, galaxies, galaxy, Nebula, nebulae, rotation, spectrograph, V.M. Slipher, velocity

Hubble, Edwin, Edwin Hubble to V. M. Slipher, March 6, 1953, on using images for a lecture, 1953-03-06

Hubble wrote to Slipher to request use of a few of his images on velocity and some of his spectra to use with Hubble's own on distance to deliver a…

Tags: Astronomy, distance, Edwin Hubble, galaxies, galaxy, Nebula, nebulae, Red Shift, V.M. Slipher, velocity

Putnam, Roger Lowell, Searching Out Pluto - Lowell's Trans-Neptunian Planet X, 1932

Searching Out Pluto - Lowell's Trans-Neptunian Planet X for Science Monthly

Rodes, Luis, Relation of the Doppler effect to Kirchhoff's Law, 1919-01-24

On the relation of the Doppler effect to Kirchhoff's Law. Letter to V.M. Slipher from Luis Rodes, Ebro Observatory, Spain.

Rogers, Alice M., Detection of High Color Index Stars With The Lawrence Lowell Telescope (With Alice M. Rogers), 1936

Detection of High Color Index Stars With The Lawrence Lowell Telescope. Publications of the American Astronomical Society, 8 pp:255 (Abstract of…