These 17th-century drawings of the sun by Kepler add fire to solar cycle mystery

www.livescience.com

These 17th-century drawings of the sun by Kepler add fire to solar cycle mystery

www.livescience.com

@CAVOK to

[email protected]English • 5 months ago

Kepler's sun drawings are the oldest sunspot records with known dates.

Chat

@Plopp
link
English
8•5 months ago
Maybe the author had forgotten about them?

[email protected]

Create a post

You are not logged in. However you can subscribe from another Fediverse account, for example Lemmy or Mastodon. To do this, paste the following into the search field of your instance: [email protected]

News and information from Europe 🇪🇺

(Current banner: La Mancha, Spain. Feel free to post submissions for banner images.)

Rules (2024-08-30)

This is an English-language community. Comments should be in English. Posts can link to non-English news sources when providing a full-text translation in the post description. Automated translations are fine, as long as they don’t overly distort the content.
No links to misinformation or commercial advertising. When you post outdated/historic articles, add the year of publication to the post title. Infographics must include a source and a year of creation; if possible, also provide a link to the source.
Be kind to each other, and argue in good faith. Don’t post direct insults nor disrespectful and condescending comments. Don’t troll nor incite hatred. Don’t look for novel argumentation strategies at Wikipedia’s List of fallacies.
No bigotry, sexism, racism, antisemitism, dehumanization of minorities, or glorification of National Socialism.
Be the signal, not the noise: Strive to post insightful comments. Add “/s” when you’re being sarcastic (and don’t use it to break rule no. 3).
If you link to paywalled information, please provide also a link to a freely available archived version. Alternatively, try to find a different source.
Light-hearted content, memes, and posts about your European everyday belong in [email protected]. (They’re cool, you should subscribe there too!)
Don’t evade bans. If we notice ban evasion, that will result in a permanent ban for all the accounts we can associate with you.
No posts linking to speculative reporting about ongoing events with unclear backgrounds. Please wait at least 12 hours. (E.g., do not post breathless reporting on an ongoing terror attack.)

(This list may get expanded when necessary.)

We will use some leeway to decide whether to remove a comment.

If need be, there are also bans: 3 days for lighter offenses, 14 days for bigger offenses, and permanent bans for people who don’t show any willingness to participate productively. If we think the ban reason is obvious, we may not specifically write to you.

If you want to protest a removal or ban, feel free to write privately to the mods: @[email protected], @[email protected], or @[email protected].

337 users / day
1.72K users / week
3.2K users / month
9.03K users / 6 months
1.66K subscribers
1.34K Posts
8.67K Comments
Modlog