Nobel Laureate professor Barry Marshall and Winthrop professor David Blair will speak at the event, which starts at 6.30pm.
The centre will also open its Woodside Entry Archway and announce the John and Robin Delaeter scholarship winners.
There will be a free-form dark sky laser shower and attendees can view the moon, Mars and Saturn through telescopes at the Gingin Observatory.
Free tickets are available online through www.gravitycentre.com.au.
For more information, call 9575 7577 or email firstname.lastname@example.org.