This invisible boundary, located about 100 astronomical units (AU) from the Sun (one AU is the distance from Earth to the Sun ...

Apartment and condo dwellers in one US state can enjoy balcony solar power with EcoFlow's new Stream series. Here's what you need to know.

And one day, the solar system will cease to exist. But when will the solar system end? And how will it die out? The answers to those questions depend on how we define the death of the solar system.

Test your knowledge on our solar system, from the biggest and smallest planets to the behemoth mountain on Mars.

NPR's Ari Shapiro talks with astronomer David Jewitt about what we can learn from the third interstellar object to have entered our solar system, a comet-like object known as 3I/ATLAS.