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Heliopause

All articles tagged with #heliopause

NASA downshifts Voyager 1 instrument to stretch its interstellar voyage
space1 month ago

NASA downshifts Voyager 1 instrument to stretch its interstellar voyage

NASA engineers shut down the Low-energy Charged Particles (LECP) instrument on Voyager 1 on April 17 to conserve dwindling nuclear power, allowing the spacecraft to continue studying the interstellar medium beyond the solar system. Voyager 2’s LECP was silenced earlier in 2025, and only a handful of instruments remain active on both Voyagers. Voyager 1 is currently more than 15 billion miles (about 24 billion kilometers) from Earth, making it the farthest human-made object, and the instrument shutdown is part of a planned retirement sequence to maximize science as the power supply declines.

via Space|
#heliopause#interstellar-space#lecp
Voyager Encounters Unexpected 50,000 Kelvin Boundary at Solar System's Edge
science5 months ago

Voyager Encounters Unexpected 50,000 Kelvin Boundary at Solar System's Edge

NASA's Voyager 1 and Voyager 2 spacecraft have detected a hot, energetic boundary at the edge of our solar system called the heliopause, where temperatures spike to 30,000-50,000 Kelvin, marking the transition from solar to interstellar space. The findings challenge previous assumptions about the magnetic field and permeability of this boundary, providing new insights into how our solar system interacts with the galaxy.

via The Daily Galaxy|
#heliopause#heliosphere#interstellar-space
NASA's Voyager Encounters a Fiery Barrier at the Solar System's Edge
science6 months ago

NASA's Voyager Encounters a Fiery Barrier at the Solar System's Edge

NASA's Voyager 1 has encountered a 'wall of fire' at the edge of the Solar System, a hot zone near the heliopause, which marks the boundary between our Solar System and interstellar space. Data from Voyager 1 and Voyager 2 reveal that beyond this boundary, magnetic fields are aligned parallel to those inside the heliosphere, providing new insights into the nature of this frontier.

via Dagens.com|
#heliopause#interstellar-space#magnetic-fields
NASA's Voyager Detects Hot 'Wall' at Solar System's Edge Linked to 1977 Wow! Signal
science6 months ago

NASA's Voyager Detects Hot 'Wall' at Solar System's Edge Linked to 1977 Wow! Signal

NASA's Voyager spacecraft discovered a 'wall of fire' at the edge of the solar system, with temperatures between 30,000 and 50,000 Kelvin, as they crossed the heliopause, marking the boundary where the solar wind meets interstellar space. Despite the extreme temperatures, the probes survived due to the sparse particle environment, providing valuable data about the solar system's outer limits and magnetic field alignment beyond the heliosphere.

via IFLScience|
#heliopause#interstellar-space#science
"The Outer Boundary of the Solar System: Where Does It End?"
astronomy2 years ago

"The Outer Boundary of the Solar System: Where Does It End?"

The solar system has three potential boundaries: the Kuiper Belt, the heliopause, and the Oort Cloud. The Kuiper Belt, located 30-50 AU from the sun, is considered by some as the edge due to its representation of the sun's protoplanetary disk. The heliopause, the outer edge of the sun's magnetic influence, is often used to define the solar system's edge due to its distinct properties. The Oort Cloud, extending up to 100,000 AU from the sun, is considered by some as the clear choice for a solar system boundary. While the heliopause is most commonly used to define the solar system's edge, some researchers argue for multiple boundaries.

via Livescience.com|
#astronomy#boundary#heliopause
"The Enigma of the Solar System's 'Wall of Fire'"
space2 years ago

"The Enigma of the Solar System's 'Wall of Fire'"

The region where the solar wind meets interstellar space, known as the heliopause, has been dubbed the "Wall of Fire" due to its remarkably high temperatures, measured by the Voyager spacecraft. Despite the dramatic name, the "wall" is actually a region of hot plasma with extremely low density, making it unlikely to affect spacecraft passing through. The high temperatures at the heliopause have been attributed to either plasma compression or magnetic reconnection, and the Voyager missions' findings have provided valuable insights into this boundary region of the Solar System.

via IFLScience|
#heliopause#interstellar-space#plasma
"NASA's Interstellar Boundary Explorer Discovers Ripples in Heliosphere"
science3 years ago

"NASA's Interstellar Boundary Explorer Discovers Ripples in Heliosphere"

NASA's Interstellar Boundary Explorer (IBEX) mission has discovered that the heliosphere, the magnetic bubble created by the Sun that we live in, has ripples that change over time, likely due to influences from the Sun itself. These ripples could be caused by changes in the outward pressure of the solar wind, and the boundary of the heliosphere, called the heliopause, may change and oscillate over time. Future NASA missions will help us discover more about this mysterious bubble we live in.

via SciTechDaily|
#heliopause#heliosphere#interstellar-boundary-explorer