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kafa88

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9.5.2022, 7:32
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25.4.2022
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Členství od: 25.4.2022
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Breathtaking New Images Show Giant 'Claw Marks' on The Surface of Mars

9.5.2022, 7:32 Odpowiedzi: 18
<p>https://www.sciencealert.com/images/2022-05/image-tantalus-fossae-1.jpeg<br></p><p><font style="vertical-align: inherit;"><font style="vertical-align: inherit;"><br></font></font></p><p><font style="vertical-align: inherit;"><font style="vertical-align: inherit;"><br></font></font></p><p><font style="vertical-align: inherit;"><font style="vertical-align: inherit;"><br></font></font></p><p><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">While it still has plenty of <a href="https://slotxo.im/"><b>slot</b></a> mysteries for us to solve, Mars is becoming clearer to us every day, thanks to the dozen functioning robots we currently have either on the red planet's surface or in its orbit.</font></font></p><p><font style="vertical-align: inherit;"><font style="vertical-align: inherit;"><br>In this latest release from the European Space Agency's (ESA) Mars Express orbiter, a unique feature of Mars's geology is shown with breathtaking detail.Looking like giant scratches across the planet's surface, these grooves are part of a giant fault system on Mars known as Tantalus Fossae.<br><br>Aside from the detail in the image, what's really gobsmacking is the scale we're looking at – these troughs are up to 350 meters (1,148 feet) deep and 10 kilometers wide (6.2 miles) and can stretch for up to 1,000 kilometers.<br><br>The image is true color, which means it represents what humans would see if they were looking at the region with their own eyes.It's not technically a 'photo'; the image was generated from a digital terrain model of Mars and using the color channels of the High Resolution Stereo Camera on ESA's Mars Express – but it presents an incredibly clear view of the vast area. <br></font></font></p>

Violent stellar explosion produces highest-energy gamma-rays ever observed from a nov

25.4.2022, 10:44 Odpowiedzi: 21
<p>[Obrázek: mzeHmeJTKZuEwTB5r8qw2a.png]<br></p><p><br></p><p><br></p><p>Asmall, <a href="https://slotxo.im/"><b>slot</b></a> dense star chowing down on its enormous dying neighbor caused a massive explosion that generated some of the highest-energy gamma-rays ever observed for a nova.The nova system, called RS Ophiuchi, produced the extremely high-energy gamma-rays during its latest thermonuclear explosion, observed by astronomers at the Max Planck Institute for Physics in Munich in August 2021. <br><br>Located 5,000 light-years away from Earth in the constellation Ophiuchus, RS Ophiuchi comprises one red giant star and one white dwarf that exist in a parasitic relationship called a recurrent nova system. The dense white dwarf absorbs hydrogen gas shed from the red giant's outer later, eventually acquiring so much material that the white dwarf overheats and erupts in a massive thermonuclear explosion called a nova. This occurs cyclically in recurrent nova systems, and for RS Ophiuchi, a cycle lasts approximately 15 years.<br><br>The team of astronomers observed RS Ophiuchi's most recent nova using the dual Major Atmospheric Gamma Imaging Cherenkov (MAGIC) telescopes in Spain's Canary Islands, which revealed the presence of highly energetic gamma-rays with a value of 250 gigaelectronvolts (GeV) — among the highest energies ever recorded for a nova.<br><br>The explosion created shock waves that accelerated particles to nearly the speed of light. Based on these observations, scientists now theorize that "gamma-rays emanate from energetic protons, nuclei of hydrogen atoms," the researchers said in a statement. <br></p>