Friday, August 12, 2022

Brightest stars in the night sky can strip Neptune-sized planets to their rocky cores

Current exoplanet detection methods most easily find planets with short, rapid orbital periods around their stars, but this newly found planet has a longer orbital period than most discovered to date.

While this theory has been proposed to explain so-called hot Neptune deserts around redder stars, whether this extended to hotter stars—A-type stars are about 1.5 to 2 times hotter than the sun—was unknown because of the dearth of planets known around some of the galaxy's brightest stars.

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Mark Ollig Column - 08/05/22

The two sources of my research were the school library and the World Book encyclopedias at home (no Google in 1972).

What would I use to support the nine planets (various-sized Styrofoam balls) going around the sun?

Since lampshade metal rings were of various sizes, I needed to find nine that would represent the orbital path of each planet around the sun.

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Disk of gas observed around what might be youngest exoplanet yet discovered

That gap may correspond to a Jupiter-sized exoplanet, around which the researchers detected a disk of gas, the circumplanetary disk orbiting the planet much the way the protoplanetary disk orbits the host star.

Like a protoplanetary disk, a circumplanetary disk hosts material that may condense into Moons due to gravity over time, and researchers may have caught the process early one — star is estimated to be just 1.6 million years old, which could make the exoplanet one of the youngest ever observed.

Twitter: @YahooNews
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NASA reveals giant crater on the surface of Mars that looks identical to human ear

The US space agency recently released the impressive snap taken from the hi-tech Mars Reconnaissance Orbiter probe, which has been orbiting the Red Planet since 2006.

It shows a crater measuring 1,800 metres across, located in Chryse Planitia in the Northern Hemisphere of Mars.

Publisher: MSN
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