Nearly 4.5 million years ago, two enormous, blazing stars swung close to the solar system. They did not touch the sun, but ...

Using data from the eROSITA All-Sky Survey, astronomers have created a 3D map of the low-density bubble of X-ray-emitting, million-degree hot gas that surrounds the solar system. The investigation has ...

Our solar system resides within a bubble of superheated gas known as the Local Hot Bubble (LHB). Scientists have long pondered its origins. To better study this region, the Max Planck Institute for ...

Scientists find that two hot stars passed near our solar system 4.4 million years ago, altering nearby interstellar clouds.

Around 4.4 million years ago—long before humans existed—two massive, blazing-hot stars swept past our solar system. They didn ...

For decades, astronomers have detected an unusual mix of ionised gas in the local clouds. Roughly 20% of hydrogen and 40% of ...

About 4.5 million years ago, a great cosmic dog kicked past our Solar System – and its effects may still be seen today.

A tiny satellite circling Earth is providing an unexpectedly complicated picture of the solar system's heliosphere, the invisible bubble that extends far beyond the planetary orbits to where the solar ...

Voyager 1 and 2 traveled billions of miles to reach the heliopause, showing how the Sun's magnetic influence marks the ...

While using a new computer model to analyze Voyager data, scientists found the Sun’s distant magnetic field is made up of bubbles approximately 100 million miles wide. The bubbles are created when ...