Russia to build laser cannon to vaporize space debris

The video discusses the presence of space debris outside Earth's atmosphere, with most debris being marble-sized and some as large as softballs. A three-meter optical telescope is being developed to monitor space satellites and detect dangerous debris. This telescope may eventually be converted into a laser cannon using laser ablation to eliminate debris by heating and evaporating it.

What size of debris is mentioned to be comparable to a marble?

What is the purpose of the three meter optical telescope mentioned in the text?

What is the significance of monitoring space satellites as mentioned in the text?

How will the optical telescope be transformed according to the text?

Describe the process of laser ablation as it relates to removing space debris.