Circumscribe
发表于 2025-3-25 06:30:21
Supernovae in Our Neighborhoodthen even across a distance of 3,260 light-years it will have a magnitude of −9 (i.e., 100 times brighter than the planet Venus). A supernova within a few hundred light-years of the earth would turn night into day as it would shine brighter than the full moon, but with all of the light radiating from a point source.
骂人有污点
发表于 2025-3-25 10:03:48
http://reply.papertrans.cn/89/8819/881894/881894_22.png
工作
发表于 2025-3-25 12:43:59
Supernova Photometry and Light Curvesluation if any doubts are cast on the original magnitude estimate. Despite these obvious advantages, though, it is amazing just how faint an experienced visual observer, like the U.K.’s Gary Poyner, can go. With a 35-cm Schmidt-Cassegrain, he can just detect stars as faint as magnitude 16.8.
椭圆
发表于 2025-3-25 17:34:53
http://reply.papertrans.cn/89/8819/881894/881894_24.png
cartilage
发表于 2025-3-25 21:52:56
http://reply.papertrans.cn/89/8819/881894/881894_25.png
魅力
发表于 2025-3-26 00:26:15
http://reply.papertrans.cn/89/8819/881894/881894_26.png
整洁漂亮
发表于 2025-3-26 05:25:21
https://doi.org/10.1007/978-0-387-46269-1Galaxy; Star; astronomy; discovering supernovae; guide supernova observing; observing supernova remnants;
Minatory
发表于 2025-3-26 09:56:25
http://reply.papertrans.cn/89/8819/881894/881894_28.png
Cumulus
发表于 2025-3-26 13:26:25
e explained. Helpful guidance is also provided on the use of strategies to promote rotator cuff healing, including stem cell therapy and scaffolds. The authorsare leading experts in the field, and the book will be of value for all shoulder surgeons and orthopaedic trainees and consultants, as well as sports medicine specialists..978-3-662-58729-4
一条卷发
发表于 2025-3-26 19:36:54
http://reply.papertrans.cn/89/8819/881894/881894_30.png