astronomy

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5714, w 10 Exoplanets Breaking Norms of the Universe

WASP-121b is nuts. Natrium jetstreams? 16,000 km/h winds?

Akt0, w Question about lunar calendars

But we don’t have a ‘Year 0’, it goes 1BCE to 1 CE.

Lunations are only ~29.5 days long, between specific moon phases. They still count one year as 12 lunations, ~354 days. Right now is Rajab on the Islamic Calendar, but that’s still the month, not the moon. According to the Farmers Almanac, January is the Wolf Moon, taking from both Native American and European Colonial traditions.

Yes, there are multiple counts. Rajab is the 7th month of the Islamic (Hijri) Calendar, AH 1447, while Tevet is the 4th month of the Hebrew Calendar, AM 5786.

Hopefully this helps, and I understood you correctly. If not, Wikipedia has charts of the current date according to multiple calendars when looking at specific calendars, like the Islamic Calendar, or you can look more at Lunar Calendars, and the differences between Solar, Lunisolar, and Lunar Calendars.

Gerblat, w James Webb telescope detects atmosphere on super-Earth TOI-561 b

Fantastic, I’ll start packing

Illogicalbit, w The Red Rectangle Nebula from Hubble
RebekahWSD, w The Red Rectangle Nebula from Hubble
@RebekahWSD@lemmy.world avatar

Such a lovely image!

oracle_of_vp, w Jupiter's Clouds from Juno

Why is this so different looking compared with the previous Jupiter pictures?

antonim,

Perspective (this is a view from up/downsides, where the clouds/atmosphere behaves differently), and, I presume, different colour processing (fitting the colour spectrum into what is visible to the human eye, which is not necessarily straightforward).

porcoesphino,
@porcoesphino@mander.xyz avatar

Good question. I went looking for a source and am going to stop now but here are some links.

I suspect the source is one of the social media links here:

www.missionjuno.swri.edu/junocam/processing?id=17…

It doesn’t give much info for the specifics of how it was processed:

This processed view enhances cloud-top texture and reveals swirling filaments, compact vortices, and bright high-altitude clouds embedded in a chaotic flow.

It does list the source data for processing as this:

www.missionjuno.swri.edu/junocam/processing?id=JN…

Here is a brief summary of the instrument from one of the groups involved with the Junocam:

www.msss.com/all_projects/junocam.php

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