International law in space

How should outer space be defined in international law?
Outer space, including the Moon and other celestial bodies, shall be free for exploration and use by all States without discrimination of any kind, on a basis of equality and in accordance with international law, and there shall be free access to all areas of celestial bodies..
The five treaties and agreements of international space law cover "non-appropriation of outer space by any one country, arms control, the freedom of exploration, liability for damage caused by space objects, the safety and rescue of spacecraft and astronauts, the prevention of harmful interference with space activities
The International Space Station Intergovernmental Agreement, often referred to as 'the IGA', is an international treaty signed on 29 January 1998 by the fifteen governments involved in the Space Station project.

What are the different types of International Space Law?

Generally, international space law falls into two categories:

1) binding or normative instruments such as :

treaties

standards

and national regulations

and 2) non-binding agreements which are used to convey voluntary

non-normative and/or aspirational ideals that may be too difficult to achieve international consensus on.