History of globulettes in the Milky Way, Grenman, Tiia,Elfgren, Erik,Weber, Hans, Astrophysics and Space Science, 363, 2018-02-01 00:00:00, 2018Ap&SS.363...28G||Proplyds in the flame nebula NGC 2024, Haworth, Thomas J.,Kim, Jinyoung S.,Winter, Andrew J., Monthly Notices of the Royal Astronomical Society, 501, 2021-03-01 00:00:00, 2021MNRAS.501.3502H
Launched in 1990, the NASA/ESA Hubble Space Telescope remains the premier UV and visible light telescope in orbit. With well over 1.6 million observations from 10 different scientific instruments, the ESA Hubble Science Archive is a treasure trove of astronomical data to be exploited.
European Space Agency, 2004, Externally Illuminated Circumstellar Material In The Young Nebulous Cluster Ngc 2024, 1.0, European Space Agency, https://doi.org/10.5270/esa-hn2djwc