Both of Friday’s Astronomical Unit lectures are related to celestial phenomena not discernible to human senses. David ...

Click anywhere on this site, and you’ll likely run into a measurement in terms of light-years, solar masses, astronomical units, or arcminutes. These units are unique to astronomy, and all can be ...

One of the stalwart units of astronomy just got a makeover. The International Astronomical Union, the authority on astronomical constants, has voted unanimously to redefine the astronomical unit, the ...

When it comes to dealing with the cosmos, we humans like to couch things in familiar terms. When examining exoplanets, we classify them based on their similarities to the planets in our own Solar ...

In a solar-system-shaking victory for lay language, scientists have voted to redefine one of the most foundational measurements in all of astronomy, the mean distance between the sun and the Earth.