One moon is small and irregular, and the other is larger and round. These two moons typify the sorts of objects you see throughout our solar system.
Posts by Deborah Byrd
Astronomers announced this week that halos of cosmic rays and magnetic fields – above and below the disks of galaxies – are more common than they thought.
If you could see the shock wave from a jet moving faster than sound, this is what it would look like.
In October, before dawn, look for a brilliant beauty of a star. Orion’s Belt points to Sirius, the brightest star in the nighttime sky.
Happy anniversary, Proxima Centauri! Today is the 100th anniversary of the announcement that this star is next-nearest to our sun.
Fogbows are rainbows’ cousins – made in much the same process – but with the small water droplets inside a fog instead of larger raindrops.
In 2011, global population reached 7 billion mark. Today – October 12, 2015 – it stands at more than 7.3 billion, according to United Nations estimates.
High above Earth, tiny ice crystals create halos by refracting and reflecting the light of the sun or moon.
You can find the Andromeda galaxy — closest major galaxy to our Milky Way — by star-hopping from the Great Square of Pegasus.
Touching juxtaposition of a classic John Lennon song with a magnificent video of whales. Video by Jaimen Hudson.