Takashi Tsukagoshi and his collaborators used ALMA and found a small dust concentration in the disk around TW Hydrae, the nearest young star. It is highly possible that a planet is growing or about to be formed in this concentration. This is the first time that the exact place where cold materials are forming the seed of a planet has been pinpointed in the disk around a young star.
See the press release in ALMA website for detail.
(2019/6/26)
Tsukagoshi et al., 2019, ApJL, Volume 878, Issue 1, article id. L8, 6 pp. [ADS]
Takashi Tsukagoshi (researchmap personal page)