#imageastrodujour #apod https://apod.vidry.ca/day/250408/fr

#astronomypictureoftheday #apod https://apod.vidry.ca/day/250408/en

#APoD #每日一图
#2025年04月08日

月亮拜访七姐妹

有时候，月亮会拜访昴宿星团。
意指在轨道上运行的月亮，通过著名、相对遥远的昴宿星团之前方。
这种现象的专业术语为掩星，而月亮以其会掩过太阳系所有的行星及数颗著名的亮星而著称。
由于月球轨道的倾斜与进动，造成月亮间歇式的掩食昴宿星团。
目前这一波、从2023年到2029年，每个月月亮都会掩过昴宿星。
下一波的月掩昴宿星团，得等到2042年才会再现。
这幅摄于2025年4月1日的组合主题影像，拍摄地点为西班牙的
坎塔布里亚自治区。
摄影者使用相同的相机于同一地点，先拍摄数张昴宿星团影像，然后再运用数位技术与最后的底图叠合，以凸显昴宿星团标志性的蓝色辉光。

Astronomie foto van de dag: Moon Visits Sister Stars. Fotoinfo: https://apod.nasa.gov/apod/ap250408.html #astronomie #sterrenkunde #sterrenkijken #apod #heelal

#Moon Visits Sister #Stars
#Astronomy #Picture of the Day

https://apod.nasa.gov/apod/ap250408.html

Bom-dia :) - #APOD - Moon Visits Sister Stars - Abr 08 -
A Lua Visita as Irmãs Estelares -

https://apod.nasa.gov/apod/ap250408.html -
Às vezes, a Lua faz uma visita às Sete Irmãs (Plêiades)... a órbita da nossa Lua a leva diretamente na frente do famoso aglomerado estelar das Plêiades, que está muito mais distante. O termo técnico para esse evento é ocultação, e a Lua é conhecida por suas raras ocultações de todos os planetas e de várias estrelas brilhantes famosas... -

#apod 2025-04-08 Moon Visits Sister Stars Web page: https://apod.nasa.gov/apod/ap250408.html

Moon Visits Sister Stars https://apod.nasa.gov/apod/ap250408.html #APOD

Moon Visits Sister Stars

Sometimes, the Moon visits the Pleiades. Technically, this means that the orbit of our Moon takes it directly in front of the famous Pleiades star cluster, which is far in the distance. The technical term for the event is an occultation, and the Moon is famous for its rare occultations of all planets and several well-known bright stars.

Image Credit: Cayetana Saiz

#astrophotography
#Moon
#Pleiades
#occultation
#APOD

Moon Visits Sister Stars

Image Credit: Cayetana Saiz

https://apod.nasa.gov/apod/ap250408.html #APOD

#imageastrodujour #apod https://apod.vidry.ca/day/250407/fr

#astronomypictureoftheday #apod https://apod.vidry.ca/day/250407/en

#NGC4414: A #FlocculentSpiralGalaxy
#Astronomy #Picture of the Day

https://apod.nasa.gov/apod/ap250407.html

#APoD #每日一图
#2025年04月07日

NGC 4414NGC 4414: 絮状的螺旋星系

絮状螺旋星系到底藏了多少质量？
这幅由哈勃太空望远镜所拍摄的絮状螺旋星系NGC 4414之真色主题影像，就是想为回答这个问题提供助力。
絮状螺旋星是一种没有鲜明螺旋臂的螺旋星系，这种形态的星系其实蛮常见的，其中的NGC 4414是离我们最近的一个。
位于螺旋星系可见边缘的恒星和云气，通常会以非常高的速度绕中心旋转，而星系得有大量不可见的暗物质，才能产生足够的引力来维系这种运动。
厘清NGC 4414之内的物质与暗物质之分布，有助于人类校准此星系的其他成分，并可推及其他絮状螺旋星系。
更进一步来说，测定NGC 4414的距离，有助于人类校准整个可见宇宙的距离尺标。

Bom-dia :) - #APOD - NGC 4414: A Flocculent Spiral Galaxy - Abr 07 -
NGC 4414: Uma Galáxia Espiral Floculenta -

https://apod.nasa.gov/apod/ap250407.html -
Quanta massa as galáxias espirais floculentas escondem? A imagem da galáxia espiral floculenta NGC 4414 foi capturada pelo Telescópio Espacial Hubble justamente para ajudar a responder essa pergunta.
Sem braços espirais definidos: Diferente da Via Láctea, ela tem uma estrutura "fofa" e irregular (como flocos de algodão)... -

Astronomie foto van de dag: NGC 4414: A Flocculent Spiral Galaxy. Fotoinfo: https://apod.nasa.gov/apod/ap250407.html #astronomie #sterrenkunde #sterrenkijken #apod #heelal

#apod 2025-04-07 NGC 4414: A Flocculent Spiral Galaxy Web page: https://apod.nasa.gov/apod/ap250407.html

NGC 4414: A Flocculent Spiral Galaxy https://apod.nasa.gov/apod/ap250407.html #APOD

NGC 4414: A Flocculent Spiral Galaxy

Image Credit: ESA/Hubble & NASA, O. Graur, S. W. Jha, A. Filippenko

https://apod.nasa.gov/apod/ap250407.html #APOD