You can buy Universe Sandbox 2 game here: http://amzn.to/2yJqwU6

Hello and welcome! My name is Anton and in this video, we will talk about a discovery of something very massive shooting through our galaxy and leaving a trail.

The presentation is here: https://absuploads.aps.org/presentation.cfm?pid=15143

Read more about GD-1 here: https://iopscience.iop.org/article/10.1086/505111/pdf

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