Right ascension, a celestial coordinate dating back to Hipparchus, measures the east-west position of celestial objects along the celestial equator, starting from the vernal equinox. Right ascension, ...

Today, I want to talk about the equatorial coordinate system. Start with this: What if we could project Earth's coordinates of longitude and latitude into the sky? Latitude wouldn't be a problem, but ...

Many amateur astronomers have difficulty understanding the equatorial coordinate system at first. But once you get the hang of it, using it becomes as easy as using latitude and longitude to locate ...

PROF. PIO EMANUELLI, secretary of the Vatican Observatory, has just published an extensive table for the conversion of Right Ascension and Declination into galactic co-ordinates, which forms an ...

The Geographical Journal has been published since 1831, and was the Society's journal of report until the relaunch in 2000. It has the highest circulation of any British academic journal in its field ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Look up the next few evenings! Venus and Saturn will appear near each other in the night sky this ...