Stars

Brown Dwarfs. Artist's vision of a T dwarf. Credit: R. Hurt and NASA

Podcast Episode 105 l Brown Dwarfs – Planets, stars, or something entirely different?

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Brown Dwarfs – Planets, stars, or something entirely different? Scientists think they lie between the two and can't fuse hydrogen.

Brown Dwarfs. Artists concept of T type Brown Dwarf. Source: NASA/JPL-Caltech

Brown Dwarfs – are they planets, stars, or something entirely different?

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What are Brown Dwarfs? Are they Planets, stars, or something entirely different? According to scientists, they lie between planets and stars and can't fuse hydrogen in their cores.

How Shiva and Shakti formed the Milky Way Galaxy

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The Gaia space telescope shows How Shiva and Shakti formed the Milky Way Galaxy 12 billion years ago. These two streams of stars wove together to form it.

Wispy hair-like filaments of pink-purple fill the middle of the image, curving left and right on either side of the centre. On the right, the filaments form a dramatic loop that seems to extend toward the viewer. At lower left are additional yellowish filaments. Two prominent, bright stars near the centre of the image show Webb’s eight-point diffraction spikes. Dozens of fainter stars are scattered across the image

Webb finds the smallest free-floating brown dwarf

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Webb finds the smallest free-floating brown dwarf, which are also known as failed stars. Scientists imaged the centre of a cluster using Webb’s NIRCam and find three brown dwarfs.

A rusting, green set of gears known as the Antikythera Mechanism found at the bottom of the ocean aboard a decaying Greek ship it is now acknowledged as the first computer.

This 2,000 year old mechanism is the first computer ever

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This 2,000 year old mechanism is the first computer ever and it is known as the Antikythera Mechanism found on an ancient Greek ship in 1901

An active star-forming region. Red dual opposing jets coming from young stars fill the darker top half of the image, while a glowing pale-yellow, cave-like structure is bottom center, tilted toward two o’clock, with a bright star at its center. The dust of the cave structure becomes wispy toward eight o’clock, trailing off and allowing stars and distant galaxies to show through. Above the arched top of the dust cave three groupings of stars with diffraction spikes are arranged. Smaller stars are scattered around the image. A dark cloud sits at the top of the arch of the glowing dust cave, with one streamer curling down the right-hand side. The dark shadow of the cloud appears pinched in the center, with light emerging in a triangle shape above and below the pinch, revealing the presence of a star inside the dark cloud. The image’s largest jets of red material emanate from within this dark cloud, thick and displaying structure like the rough face of a cliff, glowing brighter at the edges. At the top center of the image, a star displays another, larger pinched dark shadow, this time vertically. To the left of this star is a more wispy, indistinct region, like this star is also beginning to clear out space around itself like the one at the center of the dusty cave below.

James Webb Telescope celebrates its first year with stunning image

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James Webb Telescope celebrates its first year with stunning image that has been released by NASA. It shows a star-forming region in Rho Ophiuchi cloud complex

The Pillars of Creation are set off in a kaleidoscope of color in NASA’s James Webb Space Telescope’s near-infrared-light view. The pillars look like arches and spires rising out of a desert landscape, but are filled with semi-transparent gas and dust, and ever changing. This is a region where young stars are forming – or have barely burst from their dusty cocoons as they continue to form. Credits: NASA, ESA, CSA, STScI; Joseph DePasquale (STScI), Anton M. Koekemoer (STScI), Alyssa Pagan (STScI).

NASA’s Webb Takes Star-Filled Portrait of Pillars of Creation

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NASA’s James Webb Space Telescope has captured a lush, highly detailed landscape – the iconic Pillars of Creation – where new stars are forming within dense clouds of gas and dust. The three-dimension...

Artist's illustration of the Local Bubble with star formation occurring on the bubble's surface. Scientists have now shown how a chain of events beginning 14 million years ago with a set of powerful supernovae led to the creation of the vast bubble, responsible for the formation of all young stars within 500 light years of the Sun and Earth.

There is a Giant Bubble Surrounding the Earth and the Solar System

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There is a Giant Bubble Surrounding the Earth and the Solar System. It is 1,000 -light-year wide and is a source of all young, nearby stars.

The galaxy AGC 114905. The stellar emission of the galaxy is shown in blue. The green clouds show the neutral hydrogen gas. The galaxy does not appear to contain any dark matter, even after 40 hours of detailed measurements with state-of-the-art telescopes. Credit: (c) Javier Román & Pavel Mancera Piña

Can there be galaxies without dark matter?

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Can there be galaxies without dark matter? A new study says yes. Astronomers found 6 galaxies with little or no dark matter.

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