
"How do they Know"
When Astronomers Talk of Galaxies of Stars 60,000,000,000,000,000,000 or More Miles Distant, How Have They Arrived at Such Stupendous Figures?

"How do they Know"
When Astronomers Talk of Galaxies of Stars 60,000,000,000,000,000,000 or More Miles Distant, How Have They Arrived at Such Stupendous Figures?

Four Sunless Worlds
Jupiter, Saturn, Uranus and Neptune, Once thought to be hot, are so deeply Shrouded with Extremely Frigid Clouds that their Surface Temperatures Remain Unknown

The Heavens in October 1927

Odd Stars
The Search for Exceptional Stars--Some Unusually Bright, Some Exceptionally Faint, Others Very Rapid--Forms an Intriguing Specialty for the Modern Astrophysicist

The Heavens in September 1927

The Heavens in August 1927

Cipher Messages of the Stars
How the Modern Spectroscope Reveals Secrets to the Astrophysicist

The Heavens in July 1927

Is Mars Habitable?
Its Habitability is Made More Probable By Recent Observations Whether it is Actually Inhabited is Still Unknown

Three Coming Events
An Eclipse of the Sun, One of the Moon, and the Arrival of a Comet Will Keep Astronomers Interested During the Month of June

The Heavens in June 1927

The Heavens in May 1927

The Hottest Thing on Earth
How Astronomers Imitate Stellar Temperatures of 36,000 Degrees, Fahrenheit

The Heavens in April 1927

The Next Great Comet Is About Due
New Knowledge May Enable Scientists This Time to Fathom Its Secrets

Doubtful Newspaper Astronomy
The Phenomenon Known as Lunar Appulse Is Not a Highly Rare Astronomical Event, as Was Recently Announced by the Press. Nevertheless It Involves Interesting Considerations

The Heavens in March 1927

The Heavens in February 1927

Science Plans a Mass Attack on the Moon's Mysteries
Are the Moon's Craters Volcanic or Are They Meteoric "Shell-holes"?

The Heavens in January 1927

The Romantic Search for "Pocket" Planets
By Modern Mass-product Methods the Astronomer Now Seeks for New Asteroids

The Heavens in December 1926

Eclipsing Variables
Stars Which Revolve in Pairs, Somewhat Like Dumbbells, Alternately Eclipse One Another. Recent Studies of Such a Pair Strikingly Confirm the Previous Theories of Astronomers Concerning the Several Characteristics of the Stars

Mars Again Our Neighbor
Recent Photographic and Other Investigations With Instruments Instead of the Human Eye Confirm the Majority of the Conclusions of Lowell Concerning Mars