Astronum

🛰️• JWST snaps its first photo of an exoplanet

The image shows the bright blob of a world seven times heavier than Jupiter that orbits a star nearly 400 light-years away. The groundbreaking result is the latest in a slew of early exoplanet findings from the telescope, and a test of technologies that will enable direct imaging of Earth-like planets by future space telescopes. The grainy image of a “super-Jupiter” is a sign of what’s to come as the telescope’s exoplanet observations ramp up.

🌐: dailydance.com

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🔭• JWST is seeing stuff that shouldn’t be there.

"The models just don't predict this," Garth Illingworth, an astronomer at the University of California at Santa Cruz, told WaPo. "How do you do this in the universe at such an early time? How do you form so many stars so quickly?" For a long time, for instance, scientists believed the universe's earliest, oldest galaxies to be small, slightly chaotic, and misshapen systems. But JWST-captured imagery has revealed those galaxies to be shockingly massive, not to mention balanced and well-formed — a finding that challenges, and will likely rewrite, long-held understandings about the origins of our universe.

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🚀• What Is your opinions on the launch being delayed?

Artemis 1 has been officially delayed till Friday Sept 2nd. Before launching off the team at Nasa were unable to resolve a hydrogen bleed line issue with one of four RS-25 engines in the core stage. The bleed is designed to flow hydrogen into the engines to condition them thermally for flight. Without the correct amount of hydrogen the engine would not be able to get the maximum amount of thrust to take off properly.

🌐: space.com

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🌍• We don’t need Planet 9!

We still don’t understand what is going on with the solar-system objects beyond Neptune! No, really, we don’t know much about this region of the solar system. To be fair, these trans-Neptunian objects (TNOs) are weird. The famous hypothesis that tries to explain the scattering of the TNOs is the hypothesis about Planet 9. A new study made models to explain the clustering with inclination instability - which exponentially grows the inclinations of orbits while decreasing their eccentricities. Though the models work well and actually show the clustering, there are still some caveats.

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• How amazed are you with all of JWST's new discovery's?

Nasa released an astonishing photo of a galaxy named GLASS-z13. This galaxy is one of the oldest galaxy ever captured. It
was estimated to be just 300 million years after the Big Bang and has a redshift of z=13. This galaxy was discovered by JWST when taking a picture of a galaxy cluster named SMACS 0723.

🌐: ed.ac.uk.com

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🟤• Ground-breaking number of brown dwarfs discovered.

A recent study directly images four new brown dwarfs and we’ve only detected around 40 systems in the last three decades of searching. Brown dwarfs orbiting a parent star from a sufficient distance away are particularly valuable because they may be photographed directly, unlike those that are too near to their star and hence obscured by their brightness. This gives researchers a rare chance to examine the finer points of the brown dwarf partners’ icy, planet-like atmospheres.
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• The first in a series of missions that will return humans to the Moon.

Artemis I is scheduled for launch no earlier than Monday, August 29, at 8:33 a.m. EDT (14:33 CEST). The spacecraft will enter lunar orbit using the Moon’s gravity to gain speed and propel itself almost half a million km (280,000 miles) from Earth – farther than any human-rated spacecraft has ever traveled.
The second Artemis mission will see four astronauts travel around the Moon on a flyby voyage around our natural satellite.
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🌐: cnn.com
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🟩 • The sands of Mars are green as well as red, rover Perseverance discovers.
The accepted view of Mars is red rocks and craters as far as the eye can see. That's much what scientists expected when they landed the rover Perseverance in the Jezero Crater, a spot chosen partly for the crater's history as a lake and as part of a rich river system, back when Mars had liquid water, air and a magnetic field. What the rover found once on the ground was startling: Rather than the expected sedimentary rocks -- washed in by rivers and accumulated on the lake bottom -- many of the rocks are volcanic in nature. Specifically, they are composed of large grains of olivine, the muddier less-gemlike version of peridot that tints so many of Hawaii's beaches dark green.
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