{"id":19414,"date":"2026-07-24T20:45:17","date_gmt":"2026-07-24T20:45:17","guid":{"rendered":"https:\/\/tastyrecipes.milaf.ma\/?p=19414"},"modified":"2026-07-24T20:45:17","modified_gmt":"2026-07-24T20:45:17","slug":"discovery-of-planets-with-magnetic-fields-outside-the-solar-system","status":"publish","type":"post","link":"https:\/\/tastyrecipes.milaf.ma\/index.php\/2026\/07\/24\/discovery-of-planets-with-magnetic-fields-outside-the-solar-system\/","title":{"rendered":"Discovery of planets with magnetic fields outside the solar system"},"content":{"rendered":"

Astronomers have found the strongest evidence yet that planets outside the solar system have magnetic fields, just like Earth and five other planets in\u00a0 <\/span>.<\/span><\/p>\n

This discovery was based on measuring the movement, speed, and direction of winds on seven large, hot gas planets outside the solar system, according to a study published in the journal\u00a0 <\/span>on Tuesday.<\/span><\/p>\n

The discovery, based on observations made with telescopes in <\/span>and Hawaii, enhances our understanding of these planets; it shows that at least some of them share an important feature found in all but two of the eight planets of the solar system.<\/span><\/p>\n

planetary magnetic field<\/span><\/h2>\n

Although all gas giants outside the solar system are uninhabitable, the presence of a magnetic field may be one of the factors that helped make a rocky planet, such as <\/span>, habitable.<\/span><\/p>\n

These exoplanets each orbit very close to a large, hot star, so that one side of them is always facing the star, and the other side is always far away, just like the Moon and Earth.<\/span><\/p>\n

This type of planet is called a “hot Jupiter” because its size and composition are similar to the largest planet in our solar system, although its temperature is much higher. The mass of the seven planets ranged from about the same as the mass of\u00a0 <\/span>to more than three times that.<\/span><\/p>\n

The bright and dark sides<\/span><\/h2>\n

Strong winds blow from the hot “light side” to the cold “dark side” on these planets, due to their orbits being close to their stars, which makes their atmosphere extremely hot on the light side. All of them are closer to their host star than Mercury, the closest planet in the solar system, is to the sun.<\/span><\/p>\n

“What you might expect is that the winds would be stronger on planets with higher temperatures, so the more energy you put into the system, the stronger the winds should be,” said Julia Seidel, an astronomer at the Lagrange Laboratory of the C\u00f4te d’\u00a0 <\/span>Observatory in Nice, France, and the lead researcher on the study. “But we are seeing the opposite.”<\/span><\/p>\n

She added that “hotter planets are less susceptible to strong winds affecting their atmosphere, which is really strange compared to what we know about the nature of atmospheres.”<\/span><\/p>\n

She continued: “This means that all that energy that the star pumps into the planet’s atmosphere must be dissipated in a different way, and the only possibility for slowing the atmosphere’s movement at this speed is through the magnetic field, and its interaction with the charged particles moving in\u00a0<\/span>.”<\/span><\/p>\n

Wind speeds on the seven exoplanets reach 25,000 kilometers per hour, stronger than those on Jupiter.<\/span><\/p>\n

Given that most planets in the solar system have magnetic fields, researchers believe it is not surprising that exoplanets also have magnetic fields, but they noted that scientists have so far found it difficult to come up with convincing evidence.<\/span><\/p>\n

Planets and their atmospheres<\/span><\/h2>\n

The magnetic field is one of the factors that determine whether a planet is able to maintain its atmosphere for long periods of time; Mars, for example, once had a magnetic field, but lost it billions of years ago after its interior cooled, and now has a weak atmosphere and an uninhabitable environment.<\/span><\/p>\n

“Despite the common misconception that magnetic fields directly determine whether a planet is habitable, they may play an important role in (knowing) how a planet has evolved over time,” said astronomer Bibiana Brenoth of the European Southern Observatory in <\/span>, who co-authored the study.<\/span><\/p>\n

She added: “Life as we know it depends on the presence of an atmosphere that helps maintain pressure on the surface (of the planet) and regulates temperature, and allows on Earth for liquid water to exist on the surface.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

Astronomers have found the strongest evidence yet that planets outside the solar system have magnetic fields, just like Earth and…<\/p>\n","protected":false},"author":1,"featured_media":19415,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-19414","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/tastyrecipes.milaf.ma\/index.php\/wp-json\/wp\/v2\/posts\/19414","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tastyrecipes.milaf.ma\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tastyrecipes.milaf.ma\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tastyrecipes.milaf.ma\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/tastyrecipes.milaf.ma\/index.php\/wp-json\/wp\/v2\/comments?post=19414"}],"version-history":[{"count":1,"href":"https:\/\/tastyrecipes.milaf.ma\/index.php\/wp-json\/wp\/v2\/posts\/19414\/revisions"}],"predecessor-version":[{"id":19416,"href":"https:\/\/tastyrecipes.milaf.ma\/index.php\/wp-json\/wp\/v2\/posts\/19414\/revisions\/19416"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/tastyrecipes.milaf.ma\/index.php\/wp-json\/wp\/v2\/media\/19415"}],"wp:attachment":[{"href":"https:\/\/tastyrecipes.milaf.ma\/index.php\/wp-json\/wp\/v2\/media?parent=19414"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tastyrecipes.milaf.ma\/index.php\/wp-json\/wp\/v2\/categories?post=19414"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tastyrecipes.milaf.ma\/index.php\/wp-json\/wp\/v2\/tags?post=19414"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}