
Hunting Pocket Planets
How the Astronomical Specialist Applies Scientific Management to the Systematic Search for New Asteroids or Minor Planets

Hunting Pocket Planets
How the Astronomical Specialist Applies Scientific Management to the Systematic Search for New Asteroids or Minor Planets

The Heavens in December 1929

The Puzzles of the Comets--II
Research Indicates That the Sun Picked Up Its Family of Comets Only Recently While Passing Through Orion

The Heavens in November 1929
Night Sky: November and December

The Puzzles of the Comets--I
Why Comets Shine; Why the Heads Appear to Contain Different Substances. These and Other Puzzles Are Being Solved

Meteors
Most of the Meteors One Sees Are No Larger Then a Pea. The Majority Come From Far Beyond the Solar System

The Heavens in October 1929

What Becomes of the Star Light?
The Stars Send Out Their Light into Empty Space. Does It Go On Forever? If Not, Where Does It End?

The Heavens in August 1929

The Puzzle of the Major Planets
Jupiter, Saturn, Uranus, and Neptune, Formerly Thought to be Hot, Are Now Suspected of Being Extremely Frigid, With Oceans Frozen Solid Thousands of Miles in Depth

The Heavens in July 1929

Back of Frontispiece

Earth Shine
From the Moon the Earth Would Appear Many Times as Bright as the Moon Appears from the Earth. Interesting New Research on an Old Subject

The Heavens in June 1929

The Highest Known Velocity
Astrophysicists Have Just Determined that One Universe of Stars Is Moving Through Space at Five Thousand Times the Speed of a Rifle Bullet

The Heavens in May 1929

Electric Thermometers for the Stars
The Eye Is No Judge of the Heat which Each Star Radiates, but a Thermo-Couple Measures It with Precision. The Hotter a Star the Greater the Proportion of Its Radiation We Perceive Visually, but the Very Hottest Stars Radiate Mainly in the Ultra-Violet.

The Heavens in April 1929

Quantitative Analysis of the Sun
The Ordinary Identification of the Chemical Elements on the Sun by Means of the Spectroscope Has Long Been Possible. The Newest Development Is Quantitative Analysis of These Same Elements

The Heavens in March 1929

Does Our Universe Rotate?
Accumulated Evidence Indicates that the Whole Galaxy of Billions of Stars Rotates in About 100,000,000 Years

The Heavens in February 1929
Night Sky: February and March

The Hunt for the Hub of the Universe
New Research Reveals the Long Sought Hiding Place of the Central Nucleus of the Galaxy, Confirming the Belief that We Live in a Spiral Nebula

Where to Put It?
Few Realize How Many Factors Will Have to be Considered in Selecting Scientifically the Best Site for the New 200-Inch Telescope