Question 1

True or false: V838 Monocerotis is located in the constellation of Monoceros, the Unicorn.

Accepted Answer

True. True—Monoceros is a faint constellation near Orion, and V838 Mon lies within it.

Question 2

True or false: The outburst of V838 Monocerotis created a stunning light echo visible for years.

Accepted Answer

True. Its 2002 eruption illuminated surrounding dust, producing a spectacular expanding light echo captured by Hubble.

Question 3

True or false: V838 Monocerotis is the brightest star ever observed in our galaxy.

Accepted Answer

False. It was briefly one of the brightest, but not the brightest ever. Other supernovae, like SN 1054, outshone it.

Question 4

True or false: V838 Monocerotis temporarily became over a million times brighter than our Sun.

Accepted Answer

True. At its peak in 2002, its luminosity exceeded the Sun by a factor of about 1 million.

Question 5

True or false: V838 Monocerotis's light echo helped astronomers map 3D structures of interstellar dust.

Accepted Answer

True. The expanding echo allowed precise distance measurements and revealed complex dust patterns.

Question 6

True or false: The star is a white dwarf that underwent a nova explosion.

Accepted Answer

False. It's a cool supergiant, not a white dwarf. Novae involve white dwarfs, but V838's event was different.

Question 7

True or false: The star's eruption was caused by a supernova explosion.

Accepted Answer

False. It wasn't a supernova; it was likely a stellar merger or a giant eruption, not a core collapse.

Question 8

True or false: The outburst of V838 Monocerotis was first noticed by an amateur astronomer.

Accepted Answer

False. It was discovered by a professional survey, not an amateur. But amateurs later contributed to monitoring it.

V838 Monocerotis Trivia Questions