Solar System
What Is Causing Mercury to Shrink?

Just like a grape shriveling into a raisin, Mercury, the smallest planet in our solar…

Solar System
How Long Is 1 Year in a Black Hole?

Time behaves in bizarre ways near a black hole, one of the universe’s most extreme…

Solar System
What Planet Has the Coldest Core?

Deep beneath a planet’s surface lies a hidden world of extremes, scorching molten rock, swirling…

Solar System
How Cold Is the Core of Neptune?

Neptune is the farthest planet from the Sun in our solar system. It is a…

Solar System
Why Are Storms Able to Last So Long on Jupiter?

Jupiter's swirling atmosphere is a masterpiece of cosmic chaos, streaked with vibrant bands and storms…

Solar System
Is Dark Matter on Earth?

Stars, planets, and galaxies are just a small part of the universe. Scientists believe something…

Solar System
Why Is Pluto’s Heart Shaped?

Have you ever seen a picture of Pluto and noticed a big, bright heart on…

Stars & Black Holes
Why Is Polaris So Important for Navigation?

Have you ever looked up at the night sky and wondered how travelers in the…

Stars & Black Holes
How Do Black Holes ‘Sing’?

Have you ever heard space making sounds? Most of space is silent because sound needs…

Solar System
Is Dark Matter Hiding in the Solar System?

Have you ever looked up at the night sky and wondered what’s really out there?…