It's about thirty times as heavy as a Billiard Ball
In other words, 0.00000000500 megatonnes is 30.6730103909390 times the weight of a Billiard Ball, and the weight of a Billiard Ball is 0.032601951593751 times that amount.(American-style, WPA specifications)
Per the World Pool-Billiard Association, a billiard ball weight must weigh between 0.00000000015592237718750 megatonnes and 0.000000000170097138750 megatonnes. According to legend, the difficulty in obtaining elephant ivory for the manufacture of billiard balls in the 19th century inspired the search for a replacement material, which led to the development of the first industrial plastic.
It's about thirty times as heavy as a Puck (Hockey)
In other words, 0.00000000500 megatonnes is 30.6730103909390 times the weight of a Puck (Hockey), and the weight of a Puck (Hockey) is 0.032601951593751 times that amount.(Ice hockey)
A standard ice hockey puck weighs between 0.00000000015592237718750 megatonnes and 0.000000000170097138750 megatonnes. Hockey pucks can be shot or passed at speeds of up to 160 kph (99 mph) during games.
It's about one-thirty-fifth as heavy as a Reindeer
In other words, the weight of a Reindeer is 33.10 times 0.00000000500 megatonnes.(for Rangifer tarandus granti, adult, bull) (a.k.a. Caribou) ()Rangifer tarandus)
An adult, male reindeer weighs between 0.0000001660 megatonnes. Reindeer undertake a lengthy annual migration, with some herds traveling up to 5,000 km.
To all those observing, Merry Christmas from the Measure of Things.
It's about thirty times as heavy as a Baseball
In other words, 0.00000000500 megatonnes is 34.4136214142250 times the weight of a Baseball, and the weight of a Baseball is 0.029058261203125 times that amount.(MLB rules)
Per Major League Baseball rules, a baseball must weigh between 0.0000000001417476156250 megatonnes and 0.000000000148834996406250 megatonnes. A major league pitcher can throw a baseball at up to 150 kph (91 mph) (with a fastball pitch), with record-setting pitches as fast as 171 kph (106 mph).
It's about forty times as heavy as a Battery (D)
In other words, the weight of a Battery (D) is 0.027 times 0.00000000500 megatonnes.(Alkaline)
A "D" size battery weighs 0.0000000001350 megatonnes. The D size battery is the oldest of the modern battery sizes, first invented by the National Carbon Company in 1898.
It's about one-fortieth as heavy as The Heart of a Blue Whale
In other words, the weight of The Heart of a Blue Whale is 40 times 0.00000000500 megatonnes.(Balaenoptera musculus) (adult)
(for a 2014 specimen)
The heart of a blue whale weighs about 0.000000200 megatonnes. These hearts pump an estimated 7,100 L (1,875 gal) of blood through the whale's massive body.
It's about one-forty-fifth as heavy as a cubic meter of Snow
In other words, the weight of a cubic meter of Snow is 45 times 0.00000000500 megatonnes.(Freshly fallen, standard conditions; measurements taken in Norway, 1965-68)
One cubic meter of freshly fallen snow under standard conditions weighs an average of 0.000000230 megatonnes. Assembled in 2008, the world record largest snowman was constructed of 0.0059 megatonnes of snow and stood 37.21 m (122.1 ft) tall.