APOD - Comet R3 PanSTARRS Before Rigel

Joli effet de superposition. Je cite:

Which way is Comet R3 PanSTARRS going? Not towards the star at the top of the image, because that is Rigel, which, being far in the background, is unrelated to the comet.

Comet R3 PanSTARRS Before Rigel

APOD - Comet R3 PanSTARRS Before Rigel

Source: apod.nasa.gov

Image Credit & Copyright: Jakub Kuřák & Martin Mašek (FZU of the Czech Academy of Sciences)

xkcd_whatif - Could you power a house with the radioactivity from bananas?

xkcd_whatif - Could you power a house with the radioactivity from bananas?

Mais lol, j'adore les question *bip* =)
Je cite:

This question comes from Ji, who asks: “I heard bananas are radioactive. If they’re radioactive, then they radiate energy. How many bananas would you need to power a house?

Yes, bananas emit radiation, but not very much of it. They’re very safe – until you use them to power a house.

Banana powa - poke Minions

Could you power a house with the radioactivity from bananas?

xkcd_whatif - Could you power a house with the radioactivity from bananas?

La vidéo:

Lire la suite

sciencepost - chez le bourdon - transmettre socialement un comportement trop complexe pour être inventé seul

Je cite: À retenir Les bourdons résolvent un puzzle en deux étapes en observant leurs congénères, une tâche impossible à accomplir seul Ce comportement persiste dans la colonie et se transmet de génération en génération après la mort des instructeurs Les insectes sociaux pourraient s’adapter  […]

Lire la suite

Haut de page