another thing that floats
- Epsilon Virginis (Wikipedia)
Epsilon Virginis (ε Virginis, abbreviated Epsilon Vir, ε Vir), formally named Vindemiatrix /vɪndiːmiˈeɪtrɪks/, is a star in the zodiac constellation of Virgo. The apparent visual magnitude of this star is +2.8, making it the third-brightest member of Virgo. Based upon parallax measurements made by the Gaia spapecraft, Vindemiatrix lies at a distance of about 108 light-years (33 parsecs) from the Sun, give or take 0.7 light-years.
- Lava balloon (Wikipedia)
A lava balloon is a gas-filled bubble of lava that floats on the sea surface. It can be up to several metres in size. When it emerges from the sea, it is usually hot and often steaming. After floating for some time it fills with water and sinks again.