Sentences with phrase «global magnetic field»

Our polarization measurements of near - infrared point sources indicate a well - ordered global magnetic field that is perpendicular to the main filament, implying that the magnetic field is likely to have controlled the formation of the main filament.

Reader Bruce Merchant speculated that Mars would need a protective global magnetic field to sustain a life - friendly environment.

The resultant weak global magnetic field and the constant bombardment of stellar wind would serve to intensify losses of atmosphere on the star - facing side.»

Our polarization measurements of near - infrared point sources indicate a well - ordered global magnetic field that is perpen... ▽ More The Serpens South embedded cluster, which is located at the constricted part in a long filamentary infrared dark cloud, is believed to be in very early stage of cluster formation.

On Earth, these particles are guided toward the poles by our planet's global magnetic field.

Unlike Earth, Mars does not have a global magnetic field that envelops the entire planet.

Mars lost its global magnetic field billions of years ago and now just has remnant «fossil» magnetic fields embedded in certain regions of its surface.

Because Mars no longer has a global magnetic field to protect it, solar wind might strip away material from the upper layers of the atmosphere.

Since Mars has a patchwork of surface magnetic fields, scientists had suspected that the Martian magnetotail would be a complex hybrid between that of a planet with no magnetic field at all and that found behind a planet with a global magnetic field.

«We're getting stronger evidence that there's something unusual about the core - mantel boundary under Africa that could be having an important impact on the global magnetic field.»

«We're getting stronger evidence that there's something unusual about the core - mantel boundary under Africa that could be having an important impact on the global magnetic field,» Tarduno says.

The moon has no global magnetic field today, but early in its life, it probably had a core hot enough to churn violently, with the movement of this electrically charged fluid creating a magnetic field.

This showed that the two major eruptions were linked to each other, and to other events, via the same deformations of the sun's global magnetic field.

While the modern moon lacks a global magnetic field, magnetized rocks offer a record of what the lunar magnetic field was like when they cooled down billions of years ago.

Unlike Earth, Mars has no substantial atmosphere or global magnetic field, and so is completely unprotected against the flood of energetic radiation particles from outer space.

The moon does not currently have a global magnetic field.

The key factor in the atmospheric demise is that unlike Earth, Mars doesn't have a global magnetic field (see illustrations below).

Mars lost most of its global magnetic field about 4.2 billion years ago, which allowed the solar wind to sweep away much of the planet's atmosphere over a few hundred million years, she says.

In the 1970s, the first spacecraft to Mercury surprised scientists by discovering that the small world sports a global magnetic field, something Venus and Mars both lack.

A global magnetic field might have funnelled enough energy into the atmosphere to push lighter particles escape into space, like steam from a pot of boiling water, for example.

The leading theory is that early Mars had a global magnetic field that for some reason switched off about 4 billion years ago.

The core of Mercury may have flakes of iron falling like snow and initiating a global magnetic field.

But Venus is closer to the sun and lacks a global magnetic field, which is what protects Earth from our star's harshest rays.

It's about 2 - 2.5 nanotesla at satellite altitude, which is about 20,000 times weaker than the Earth's global magnetic field,» Professor Nils Olsen, from the Technical University of Denmark, told BBC News.

But if this active magnetic region is long - lasting and representative of its global magnetic field, LSR J1835 +3259 is way more «star - like» than we give brown dwarfs credit for.

If life could evolve on Proxima b (and that's a big «if»), the planet would need a very powerful magnetosphere (a global magnetic field) to deflect powerful stellar winds to prevent its atmosphere from being stripped away and any extraterrestrial biology from being irradiated.

We're almost certain that Mars once had a thick atmosphere, too — but because the planet lacks a global magnetic field to deflect solar winds, the atmosphere has been steadily burnt away over the millennia.

The global magnetic field appears to be curved in the southern part of the main filament.

Such morphology is consistent with the idea that the global magnetic field is distorted by gravitational contraction along the main filament toward the northern part that contains larger mass.

Despite being one of the three terrestrial spheres blessed with a global magnetic field (with the other two being Earth and Jupiter's moon Ganymede), Mercury's invisible shield will not protect future explorers from the wrath of the Sun.

This is an artist's concept of the Earth's global magnetic field, with the bow shock.

Further, the orbiter's laser altimeter helped scientists create the best - ever topographic map of the Red Planet, and readings from its magnetometer indicate that Mars once had a global magnetic field, just like Earth.

«We're getting stronger evidence that there's something unusual about the core - mantle boundary under Africa that could be having an important impact on the global magnetic field.»

This active faulting is consistent with the recent finding that Mercury's global magnetic field has existed for billions of years and with the slow cooling of Mercury's still hot outer core.

So, if the aurora is interpreted as the souls of the dead, spare a thought for what you'd see if you lived on an exoplanet with a global magnetic field, orbiting close to its host star.

The planet itself lacks a global magnetic field, which typically protects planets like Earth from solar wind, maintaining the atmosphere.