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Shhhhh! There is a BIG lion in the sky! Find the waxing crescent Moon tonight in the western sky and then look to the Moon’s right to find Regulus the brightest star and the heart of Leo the Lion. Leo is the 12th largest of the 88 constellations. Graphic credit:...

Happy Aphelion All! We’re farther away from the Sun today than any other time of the year - 94.5 million miles. But, why? Earth’s path around the Sun isn’t circular—it’s closer to an oval. So, why is it so hot? It’s summer in the Northern Hemisphere because the Earth’s axis...

Heat getting to you? Not to worry, winter skies are starting to appear. Just look to the east before dawn to see a thin crescent Moon rising with the Pleiades cluster. The planet Jupiter and the eye of Taurus the Bull, brilliant Aldebaran, should also be in view. By the...

Have you ever seen the Red Planet? Set your alarm for 4:30am today and let the Moon be your guide. Mars will be directly below the Moon in the eastern sky before dawn. Mars may be half of Earth’s size and 162 million miles away, but this planet has the...

It’s officially summer! And, the longest day of the year for those of us living in the Northern Hemisphere. Take a moment to watch sunset this evening and notice how far north the sun is setting along the western horizon. (At dawn, you’ll also be able to see how far...

Have you ever seen earthshine? It’s stunning! First spot the waxing crescent Moon in the western sky this evening. Then, look for the bright sliver (about 10% of the lunar disk) illuminated by the Sun (which already set). Now, see if you can pick out the rest of the disk...

Up early? Look to the east in the morning before dawn to catch the beautiful crescent Moon rising with the planet Mars close behind. Graphic credit: Stellarium

Did you see the aurora caused by the big solar storm? Many of our Fiskers saw the gorgeous display from Boulder and the foothills. The Sun is approaching solar maximum and will continue to be very active. Watch spaceweather.com for updates and NOAA’s Space Weather Prediction Center for aurora forecast...

Let's celebrate NASA's Black Hole week May 6-10! Throughout the week, science communicators from across the globe will be sharing news, videos, and social media posts about black holes. Our goal is that no matter where people turn that week, they’ll run into a black hole. (Figuratively, of course —...

Death Star or ? Believe it or not, this is Mimas . One of Saturn's smallest moons. It was discovered in 1789, but only seen as a small blip until 1980 when NASA's Voyager mission flew by and took close up images. So...Star Wars came out in 1977 and there's...