1. They launched by piggybacking on rockets that were launching larger satellites. For instance, they launched 88 on this record-setting PSLV launch: https://ww

1. They launched by piggybacking on rockets that were launching larger satellites. For instance, they launched 88 on this record-setting PSLV launch: https://www.nasaspaceflight.com/2017/02/indias-pslv-record-104-satellites/ https://www.nasaspaceflight.com/2017/02/indias-pslv-record-1... 2. People generally have a poor understanding of how vast space is. Congestion in specific low-Earth orbits is definitely a concern, but the devil is in the details. For instance, launching to Sun-Synchronous orbit (SSO) [1] above ~600 km is considered to pose significant risk to on-orbit assets, because of how many satellites are in SSO and the kinetic energy their carry, however to really assess the risk, you need to do a lot of detailed population studies (I've done some of this stuff). In a nutshell, launching more satellites can be generally considered to increase risk of on-orbit collision and fragmentation, but quantifying it requires a lot of maths and physics. 3. Yes! There's is extensive and on-going research on this topic. Most people know the Kessler Syndrome [2], but honestly space debris research goes a lot further than that. This review by J.-C. Liou is a great starting point: https://commons.erau.edu/cgi/viewcontent.cgi?article=1233&context=stm https://commons.erau.edu/cgi/viewcontent.cgi?article=1233&co... [1] https://en.wikipedia.org/wiki/Sun-synchronous_orbit https://en.wikipedia.org/wiki/Sun-synchronous_orbit [2] https://en.wikipedia.org/wiki/Kessler_syndrome https://en.wikipedia.org/wiki/Kessler_syndrome