{"id":176891,"date":"2025-09-29T06:07:09","date_gmt":"2025-09-29T06:07:09","guid":{"rendered":"https:\/\/www.newsbeep.com\/au\/176891\/"},"modified":"2025-09-29T06:07:09","modified_gmt":"2025-09-29T06:07:09","slug":"huge-space-bubble-the-heliosphere-allows-life-to-exist-on-earth","status":"publish","type":"post","link":"https:\/\/www.newsbeep.com\/au\/176891\/","title":{"rendered":"Huge space bubble, the “heliosphere,” allows life to exist on Earth"},"content":{"rendered":"

An extraordinary structure called the \u201cheliosphere\u201d envelops our entire solar system in a protective bubble. NASA\u2019s new mission, IMAP<\/a>, will get close enough to the Sun to investigate how the heliosphere works.<\/p>\n

Inflated by the Sun, the heliosphere shields Earth and our planetary neighbors from deadly cosmic radiation that travels at the speed of light, allowing life on this beautiful blue marble to survive and thrive.<\/p>\n

How the Sun fuels the heliosphere
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The Sun is constantly emitting bursts of charged particles \u2013 protons, electrons, and ions \u2013 at speeds of more than a million miles per hour. <\/p>\n

This colossal stream, which is referred to as the solar wind<\/a>, fills out the heliosphere and sets it ballooning billions of miles outward.<\/p>\n

Earth has its own protection too \u2013 our magnetic field<\/a> \u2013 but that only covers our planet. For everything else in the solar system, the heliosphere takes on the heavy lifting.<\/p>\n

NASA\u2019s IMAP to study the heliosphere<\/p>\n

The Interstellar Mapping and Acceleration Probe \u2013 IMAP for short<\/a> \u2013 launched onboard a SpaceX Falcon 9 rocket on September 24, 2025, from Kennedy Space Center in Florida. <\/p>\n

IMAP will now spend two years collecting data about the heliosphere, the solar wind<\/a>, radiation<\/a>, magnetic fields, and other space weather conditions<\/a>.<\/p>\n

One of the scientists playing a big role in IMAP is William H. Matthaeus, a physicist from the University of Delaware<\/a> who specializes in the Sun\u2019s magnetic field and solar wind. His work helped design the magnetic field instrument onboard IMAP. <\/p>\n

The mission\u2019s main questions are: How do those solar particles gain so much energy? And how exactly does our solar system interact with the wider galaxy?<\/p>\n

IMAP carries 10 different instruments to help answer those questions. It\u2019ll also study tiny particles called cosmic dust, which come from beyond the solar system.<\/p>\n

\u201cThat all relates to space weather. If you want to know what\u2019s hitting Earth, you have to have spacecraft in the right position. That\u2019s always of interest from a space weather point of view,\u201d Matthaeus explained. <\/p>\n

\u201cYou get to understand how significant the perturbations are when they come by. That\u2019s important if you want to design missions to better withstand the conditions and see conditions farther from the sun.\u201d<\/p>\n

It\u2019s also essential for keeping future astronauts safe as they head to the Moon or Mars.<\/p>\n

Where IMAP will park<\/p>\n

This isn\u2019t just a science experiment for fun. Space weather<\/a> affects real things here on Earth \u2013 like satellites, radio communication, power grids, and even the safety of astronauts.<\/p>\n

IMAP will park at a spot called Lagrange Point 1, or L1 for short. That\u2019s about 1 million miles (1.6 million kilometers) from Earth, in the direction of the Sun. <\/p>\n

It\u2019s a perfect spot for observing space weather because gravity<\/a> from the Earth and Sun balance out there.<\/p>\n

Two other spacecraft will tag along with IMAP. One is the Carruthers Geocorona Observatory<\/a>, the first mission focused on changes in Earth\u2019s outermost atmosphere. <\/p>\n

The other is NOAA\u2019s Space Weather Follow On L1, which will track the solar wind and coronal mass ejections \u2013 huge eruptions of energy from the Sun\u2019s surface that can disrupt life on Earth.<\/p>\n

More spacecraft, more discoveries<\/p>\n

L1 isn\u2019t empty. It\u2019s already home to five other spacecraft, and Matthaeus is excited to add some more. <\/p>\n

\u201cThat\u2019s one of the specialties of our group. And IMAP is going to add another spacecraft to the L1 fleet, what I like to call the \u2018L1 constellation,\u2019\u201d he said.<\/p>\n

Other spacecraft near L1 include Ace, Wind, Discover, MMS, and India\u2019s Aditya. There will be at least six spacecraft available simultaneously.<\/p>\n

\u201cYou can\u2019t measure three dimensions with one spacecraft. And even with two, you only get one direction. Now we\u2019ll have information about the three-dimensional structure of shocks, coronal mass ejections<\/a> and turbulence,\u201d Matthaeus noted.<\/p>\n

How IMAP will see the heliosphere<\/p>\n

IMAP will also be able to do something special: detect energetic neutral atoms heading for Earth. <\/p>\n

These atoms are unique because they don\u2019t have a charge, which means they aren\u2019t affected by magnetic fields. They travel in straight lines, making it easier to figure out where they came from.<\/p>\n

IMAP has three instruments just for detecting these particles, and they\u2019ll help scientists map the heliosphere and parts of space we\u2019ve never understood before. <\/p>\n

This isn\u2019t just about measuring numbers though. It\u2019s about figuring out how our solar system works \u2013 and how it connects to the galaxy around us.<\/p>\n

\u201cWe are going to find incredible new discoveries,\u201d said Nicky Fox<\/a>, associate administrator for NASA\u2019s Science Mission Directorate.<\/p>\n

\u201cWhat is coming from the sun? What is coming from the interstellar medium? We\u2019re excited about the applications. But the actual discovery science is going to literally rewrite textbooks and that\u2019s why we\u2019re so excited about it.\u201d<\/p>\n

Matthaeus added that, \u201cWe intend to be part of that rewrite \u2013 not just me, but my students and postdocs. I always tell them, \u2018Don\u2019t just look over your shoulder. Try to do something nobody else has done before.\u201d<\/p>\n<\/p>\n

Information from a NASA online press release<\/a>.<\/p>\n

Image credit: IMAP launching (NASA)<\/p>\n

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Check us out on EarthSnap<\/a>, a free app brought to you by Eric Ralls<\/a> and Earth.com.<\/p>\n

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