The expression "spacewards" is commonly used to refer to a direction towards space. However, there are several other synonyms that can be used to convey the same meaning in context. These synonyms include "astronomically," "cosmically," "heavenward," and "skyward," among others. "Astronomically" is often used to describe anything that is related to space, while "cosmically" refers to the universe as a whole. "Heavenward" is a more poetic way to describe something that is moving upward towards the sky or beyond while "skyward" is a more direct way to describe things that are moving towards the sky. Overall, these synonyms provide a diverse range of options for expressing the direction towards space.