Pa long ofod fydda chi'n dewis i archwilio'r bydysawd? Elidir Jones sy'n ymuno i drafod. Which spaceship would you choose to explore space? Elidir Jones joins to discuss. Show more
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Pa long ofod fydda chi'n dewis i archwilio'r bydysawd? Elidir Jones sy'n ymuno i drafod. Which spaceship would you choose to explore space? Elidir Jones joins to discuss. Show more
Ail wasanaeth BBC Radio Cymru sy'n cynnig sioe frecwast bob bore'r wythnos.
