Heliosphere
Scientists Discover Unexplained Structures at Boundary to Interstellar Space
The heliosphere is the gateway to interstellar space, and it's a very weird place that we're just beginning to understand.
A Flaky Croissant-Shaped Bubble Surrounds Our Solar System, Scientists Say
The heliosphere surrounding our solar system appears to be more flaky and delicious than we thought, and scientists are figuring out why.
The Farthest Spacecraft from Earth Picks Up an Unexpected New Signal
Voyager 1 has likely made the first continuous measurement of the density of matter in interstellar space.
Voyager 2 Joins Its Twin in Interstellar Space
The probe crossed the heliopause, the boundary between the heliosphere and the interstellar medium, on November 5.
We May Have Identified What Lies at the Outermost Edge of Our Solar System
New Horizons is the first spacecraft in nearly three decades to observe what appears to be evidence of a hydrogen wall at the edge of the heliosphere.
Voyager 1's Exit From Our Solar System Has Only Taken 35 Years
Voyager 1 launched 35 years ago. Now it's about to leave the boundary of our solar system. And it's still going strong.