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1. Does the Sun have a dark disk?

   https://doi.org/10.1103/PhysRevD.111.083057  

   Alves, Gustavo_F S; Gardner, Susan; Machado, Pedro; Zakeri, Mohammadreza (April 2025, Physical Review D)

   The Sun is not quite a perfect sphere, and its oblateness, thought to be induced through its rotation, has been measured using optical observations of its radius. Its gravitational quadrupole moment can then be deduced using solar models, or through helioseismology, and it can also be determined from measurements of its gravitational effects on Mercury’s orbit. The various assessments do not appear to agree, with the most complete and precise orbital assessments being in slight excess of other determinations. This may speak to the existence of a nonluminous disk or ring, where we also note evidence for a circumsolar dust ring within Mercury’s orbit from the Solar TErrestrial RElations Observatory (STEREO) mission. Historically, too, a protoplanetary disk may have been key to reconciling the Sun’s metallicity with its neutrino yield. The distribution of the nonluminous mass within Mercury’s orbit can modify the relative size of the optical and orbital quadrupole moments in different ways. We develop how we can use these findings to limit the mass of a dark disk, ring, or halo in the immediate vicinity of the Sun, and we note how future observational studies of the inner Solar System can not only refine these constraints but can also help to identify and to assess the mass of its dark-matter component. Published by the American Physical Society2025 

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2. A 100 au Wide Bipolar Rotating Shell Emanating from the HH 212 Protostellar Disk: A Disk Wind?

   https://doi.org/10.3847/1538-4357/aaae6d  

   Lee, Chin-Fei; Li, Zhi-Yun; Codella, Claudio; Ho, Paul T.; Podio, Linda; Hirano, Naomi; Shang, Hsien; Turner, Neal J.; Zhang, Qizhou (March 2018, The Astrophysical Journal)
3. A close quasar pair in a disk–disk galaxy merger at z = 2.17

   https://doi.org/10.1038/s41586-023-05766-6  

   Chen, Yu-Ching; Liu, Xin; Foord, Adi; Shen, Yue; Oguri, Masamune; Chen, Nianyi; Di Matteo, Tiziana; Holgado, Miguel; Hwang, Hsiang-Chih; Zakamska, Nadia (April 2023, Nature)
4. Exploring the Perturbed Milky Way Disk and the Substructures of the Outer Disk

   https://doi.org/10.3847/1538-4357/abc2cb  

   Xu, Y.; Liu, C.; Tian, H.; Newberg, H. J.; Laporte, C. F.; Zhang, B.; Wang, H. F.; Fu, X.; Li, J.; Deng, L. C. (December 2020, The Astrophysical Journal)

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5. A Circumplanetary Disk around PDS70c

   https://doi.org/10.3847/2041-8213/ac0f83  

   Benisty, Myriam; Bae, Jaehan; Facchini, Stefano; Keppler, Miriam; Teague, Richard; Isella, Andrea; Kurtovic, Nicolas T.; Pérez, Laura M.; Sierra, Anibal; Andrews, Sean M.; et al (July 2021, The Astrophysical Journal Letters)