Christophe Marquestaut
LightNews LightNews
banner
xtof64.bsky.social
Christophe Marquestaut
@xtof64.bsky.social
41 followers 360 following 1 posts
Animateur de la Société d'astronomie Populaire de la Côte Basque.
Site : astrobasque.com
Posts Replies Media Videos
Reposted by Christophe Marquestaut
bonpote.com
Stand Up For Science !
March 7, 2025 at 2:36 PM
Reposted by Christophe Marquestaut
thomasappere.bsky.social
Une magnifique photo de la galaxie du Sombrero prise par le télescope spatial #JWST vient d'être publiée.
Comparaison avec la photo de la même galaxie prise par Hubble : le JWST voit à travers les poussières du disque.
En haut : photo de la galaxie du Sombrero prise par le JWST. En bas : photo de la galaxie du Sombrero prise par Hubble.
November 25, 2024 at 3:52 PM
Reposted by Christophe Marquestaut
euclid-france.bsky.social
Et si VOUS participiez à la mission Euclid à nouveau ? 🥰
Nous venons de lancer la campagne "space wraps" sur la plateforme Zooniverse ! 🚀 🛰️

⬇️ On vous explique tout ⬇️

www.zooniverse.org/projects/apr...

#espace #spatial #astronomie #astrophysique #sciencecitoyenne #sciencesparticipatives
Zooniverse
The Zooniverse is the world’s largest and most popular platform for people-powered research.
www.zooniverse.org
November 22, 2024 at 3:01 PM
Reposted by Christophe Marquestaut
astronomers.bsky.social
Comet Pons-Brooks' Swirling Coma
Comet Pons-Brooks' Swirling Coma A bright comet will be visible during next month's total solar eclipse. This very unusual coincidence occurs because Comet 12P/Pons-Brooks's return to the inner Solar System places it by chance only 25 degrees away from the Sun during Earth's April 8 total solar eclipse. Currently the comet is just on the edge of visibility to the unaided eye, best visible with binoculars in the early evening sky toward the constellation of the Fish (Pisces). Comet Pons-Brooks, though, is putting on quite a show for deep camera images even now. The featured image is a composite of three very specific colors, showing the comet's ever-changing ion tail in light blue, its outer coma in green, and highlights some red-glowing gas around the coma in a spiral. The spiral is thought to be caused by gas being expelled by the slowly rotating nucleus of the giant iceberg comet. Although it is always difficult to predict the future brightness of comets, Comet Pons-Brook has been particularly prone to outbursts, making it even more difficult to predict how bright it will actually be as the Moon moves in front of the Sun on April 8. Image Credit & Copyright: Jan Erik Vallestad
November 25, 2024 at 4:28 PM
Reposted by Christophe Marquestaut
pomarede.bsky.social
Sombrero galaxy: Hubble+Spitzer VS JWST

Credits
1) NASA/JPL-Caltech and The Hubble Heritage Team (STScI/AURA)
2) NASA, ESA, CSA, STScI

Sources
1) esahubble.org/images/opo03...
2) webbtelescope.org/contents/med...
The Sombrero galaxy The Sombrero galaxy
November 25, 2024 at 4:26 PM
xtof64.bsky.social
Retrouver les photos du ciel et des animations de la SAPCB sur www.instagram.com/astro_popbas...
Astronomie Côte Basque (@astro_popbasque) • Instagram photos and videos
92 Followers, 140 Following, 59 Posts - See Instagram photos and videos from Astronomie Côte Basque (@astro_popbasque)
www.instagram.com
November 17, 2024 at 2:58 PM