Lockheed Martin
Lockheed Martin is an undisputed big dog of the space stocks, they have a massive aerospace business and a space technology division.
ARK Space Exploration & Innovation ETF
ARK Space Exploration & Innovation ETF is probably a Top Space Fund thanks to the ARK brand but is more aerospace than space
RocketLab
Rocket Lab Inc. as a space investment has many large backers; space funds and tech investors large and small.
AirBus
Airbus, a European aerospace company with a large space division. Their share price is steady, and they pay a dividend.