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Astronomy

NASA’s James Webb Telescope all set to see universe’s very first galaxies and distant worlds

January 6, 2022 by Editor Leave a Comment

NASA’s James Webb Space Telescope launched recently on an Ariane 5 rocket from Europe’s Spaceport in French Guiana, South America.

A joint effort with ESA (European Space Agency) and the Canadian Space Agency, the Webb observatory is NASA’s revolutionary flagship mission to seek the light from the first galaxies in the early universe and to explore our own solar system, as well as planets orbiting other stars, called exoplanets.

“The James Webb Space Telescope represents the ambition that NASA and our partners maintain to propel us forward into the future,” said NASA Administrator Bill Nelson. [Read more…] about NASA’s James Webb Telescope all set to see universe’s very first galaxies and distant worlds

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  • Australian research shows NASA's James Webb telescopes will reveal hidden galaxies
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Filed Under: Astronomy, News Tagged With: mission, nasa, observatory, science, space, telescope, webb

Astronomers make first clear detection of a moon-forming disc around an exoplanet

July 30, 2021 by Editor

Using the Atacama Large Millimetre/submillimeter Array (ALMA), in which the European Southern Observatory (ESO) is a partner, astronomers have unambiguously detected the presence of a disc around a planet outside our Solar System for the first time. The observations will shed new light on how moons and planets form in young stellar systems.

“Our work presents a clear detection of a disc in which satellites could be forming,” says Myriam Benisty, a researcher at the University of Grenoble, France, and at the University of Chile, who led the new research published today in The Astrophysical Journal Letters.

“Our ALMA observations were obtained at such exquisite resolution that we could clearly identify that the disc is associated with the planet and we are able to constrain its size for the first time,” she adds. [Read more…] about Astronomers make first clear detection of a moon-forming disc around an exoplanet

Filed Under: Astronomy, Features Tagged With: alma, astronomers, circumplanetary, detection, disc, form, moons, observations, planet, system

Boundary of heliosphere mapped for the first time

June 17, 2021 by Editor

For the first time, the boundary of the heliosphere has been mapped, giving scientists a better understanding of how solar and interstellar winds interact. (See video below.)

“Physics models have theorized this boundary for years,” said Dan Reisenfeld, a scientist at Los Alamos National Laboratory and lead author on the paper, which was published in the Astrophysical Journal today. “But this is the first time we’ve actually been able to measure it and make a three-dimensional map of it.”

The heliosphere is a bubble created by the solar wind, a stream of mostly protons, electrons, and alpha particles that extends from the Sun into interstellar space and protects the Earth from harmful interstellar radiation. [Read more…] about Boundary of heliosphere mapped for the first time

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Filed Under: Astronomy, News Tagged With: boundary, direction, distance, heliosphere, ibex, interstellar, map, particles, reisenfeld, signal, solar, sonar, space, sun, time, wind

Which way does the solar wind blow?

June 11, 2021 by Editor

The surface of the sun churns with energy and frequently ejects masses of highly-magnetized plasma towards Earth.

Sometimes these ejections are strong enough to crash through the magnetosphere – the natural magnetic shield that protects the Earth – damaging satellites or electrical grids. Such space weather events can be catastrophic.

Astronomers have studied the sun’s activity for centuries with greater and greater understanding. Today, computers are central to the quest to understand the sun’s behavior and its role in space weather events. [Read more…] about Which way does the solar wind blow?

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Filed Under: Astronomy, Science Tagged With: pogorelov, solar, space, weather, wind

Milky Way not unusual, astronomers find

May 26, 2021 by Editor

The first detailed cross-section of a galaxy broadly similar to the Milky Way, published today, reveals that our galaxy evolved gradually, instead of being the result of a violent mash-up. The finding throws the origin story of our home into doubt.

The galaxy, dubbed UGC 10738, turns out to have distinct ‘thick’ and ‘thin’ discs similar to those of the Milky Way. This suggests, contrary to previous theories, that such structures are not the result of a rare long-ago collision with a smaller galaxy. They appear to be the product of more peaceful change.

And that is a game-changer. It means that our spiral galaxy home isn’t the product of a freak accident. Instead, it is typical. [Read more…] about Milky Way not unusual, astronomers find

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Filed Under: Astronomy, Universe Tagged With: disc, discs, galaxies, galaxy, milky, scott, spiral, stars, thick, thin, ugc, way's

Humungous flare from sun’s nearest neighbor breaks records

April 25, 2021 by Editor

Scientists have spotted the largest flare ever recorded from the sun’s nearest neighbor, the star Proxima Centauri.

The research, which appeared in The Astrophysical Journal Letters, was led by the University of Colorado Boulder and could help to shape the hunt for life beyond Earth’s solar system.

CU Boulder astrophysicist Meredith MacGregor explained that Proxima Centauri is a small but mighty star. It sits just four light-years or more than 20 trillion miles from our own sun and hosts at least two planets, one of which may look something like Earth. It’s also a “red dwarf,” the name for a class of stars that are unusually petite and dim. [Read more…] about Humungous flare from sun’s nearest neighbor breaks records

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Fast radio bursts shown to include lower frequency radio waves than previously detected

April 23, 2021 by Editor

Since fast radio bursts (FRBs) were first discovered over a decade ago, scientists have puzzled over what could be generating these intense flashes of radio waves from outside of our galaxy.

In a gradual process of elimination, the field of possible explanations has narrowed as new pieces of information are gathered about FRBs – how long they last, the frequencies of the radio waves detected, and so on.

Now, a team led by McGill University researchers and members of Canada’s CHIME Fast Radio Burst collaboration has established that FRBs include radio waves at frequencies lower than ever detected before, a discovery that redraws the boundaries for theoretical astrophysicists trying to put their finger on the source of FRBs. [Read more…] about Fast radio bursts shown to include lower frequency radio waves than previously detected

Filed Under: Astronomy, Features Tagged With: burst, bursts, chime, detected, fast, frbs, frequencies, frequency, lower, radio, source, waves

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