Solar System
Does the Solar System Line Up with the Milky Way?
Have you ever wondered if the Solar System and the Milky Way line up perfectly, like plates spinning within plates?…
No, a Giant Asteroid Isn’t Going to “Skim” Earth on Friday
There are ways to report on occasional close approaches by near-Earth objects (NEOs) that convey the respectful awareness of their presences…
Surprise – Mars Has Auroras Too!
Just a day after skywatchers at mid- to upper-latitudes around the world were treated to a particularly energetic display of auroras…
How Long Does It Take to Get to Pluto?
It's a long way out to the dwarf planet Pluto. So, just how fast could we get there? Pluto, the…
Could There Be Another Planet Behind the Sun?
If you've read your share of sci-fi, and I know you have, you've read stories about another Earth-sized planet orbiting…
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25 Years Since Voyager’s ‘Pale Blue Dot’ Images
A quarter of a century has passed since NASA’s Voyager 1 spacecraft snapped the iconic image of Earth known as…
New Horizons Now Close Enough to See Pluto’s Smaller Moons
Now on the final leg of its journey to distant Pluto the New Horizons spacecraft has been able to spot…
Interesting Facts About The Moon
Shining like a beacon in Earth's sky is the Moon. We've seen so much of it in our lifetimes that…
The First Images Are In from Rosetta’s Valentine’s Day Comet Flyby
On Saturday, Feb. 14, the Rosetta spacecraft swooped low over the surface of comet 67P/C-G in the first dedicated close pass…
What Are The Most Famous Stars?
While there are untold billions of celestial objects visible in the nighttime sky, some of them are better known than…