It’s their active season. Here are 10 things to know about these venomous spiders that like to live where we do.
Posts by EarthSky
A new Hubble image captures – in stunning clarity – the Bubble Nebula, a cloud of gas and dust illuminated by the brilliant star within it.
In celebration of Earth Day 2016, we’ve brought together some of our favorite images of Earth by the EarthSky community. Thank you all!
The maximum number of Lyrid meteors may rain down during the predawn hours on April 22, 2016. But the moon will be in the way.
A rainbow isn’t a flat two-dimensional image on the dome of sky. It’s more like a mosaic, composed of many separate bits … in three dimensions.
It’s possible to see the whole circle of a rainbow – but sky conditions have to be just right. Plus you have to be up high!
People traveling in airplanes often see glories. The sun has to be behind your head. You’ll see the plane’s shadow cast on a cloud, surrounded by a halo of light.
That glow over the unlit part of a crescent moon – called earthshine – is light reflected from Earth.
The two outer stars in the bowl of the Big Dipper always point to Polaris, which marks the end of the Little Dipper’s handle.
Use the Big Dipper to arc to the star Arcturus. Then drive a spike to the star Spica on these springtime evenings!