Over the 25 years I’ve written this column, I’ve often marveled at the mind-boggling distances to many celestial objects. Astronomers don’t often use miles to express stellar and galactic distances ...

Today, let's talk about New Horizons. This spacecraft is truly impressive, having recently completed a deep space star navigation test. You might wonder, what is the use of deep space navigation? It's ...

On Sunday November 23, 1924, 100 years ago this month, readers perusing page six of the New York Times would have found an intriguing article, amid several large adverts for fur coats. The headline ...

Over the years, as I've enjoyed sharing my love of astronomy with you, I’ve rattled off the distances to many stars and galaxies. Except for within our solar system, trying to express those distances ...

The cosmic distance ladder could soon have another rung. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. In around 5 billion years, the sun will ...

STELLAR PARALLAX BY MEANS OF PHOTOGRAPHY.—Prof. Pritchard has sent us his eminently successful “Researches in Stellar Parallax” by the aid of photography, from observations made at the Oxford ...

FOR three years, from 1893 to 1896, Mr. A. S. Flint, of the Washburn Observatory, has devoted himself indefatigably to the determination of stellar, parallax, and his results, contained in the ...