The most massive (and luminous) star known to date is the Wolf-Rayet star R136a1, which is estimated at 265 times the mass of our Sun. It is located in the Tarantula Nebula in the Large Magellanic Cloud. (Note that it is not the largest known star).
The Top 5 Largest Planets in our Solar System
PlanetDiameter (km)Diameter (miles)Discovered by1
The Sun1,394,000866,191Ancient observer2
Jupiter143,88489,405Ancient observer3
Saturn120,53674,898Ancient observer4
Uranus51,11831,763Sir William Herschel5
Neptune49,53230,778John Couch Adams
These are top 3 heaviest planet:
1.Jupiter (18,986,000,000,000,000 Tons)
2.Saturn (5,684,600,000,000,000 Tons)
3.Neptune (1,024,700,000,000,000 Tons)
The cores of some stars, during their latest stages, can contain iron.
The heaviest element that can be produced prior to supernova is Iron (Fe).
IRON
Iron is the heaviest element made in the bowels of any star with the exception of a supernova explosion. All natural elements heavier than iron come from one of those.
In very massive stars, Iron is sometimes generated.
The final elements fused in a star of the mass of our Sun are Oxygen then Carbon. Therefore a white dwarf core could be regarded as a solid, gigantic diamond.
The heaviest element that can be produced prior to supernova is Iron (Fe).
Iron is an element, and is the heaviest element that may be made by fusion in a Star such as our Sun.
Helium.
Iron is an element, and is the heaviest element that may be made by fusion in a Star such as our Sun.
IRON
Hydrogen into Helium.
Mercury is the heaviest element at a liquid state.
The heaviest element in the periodic table (known in March 2013) is ununoctium.
Iron is the heaviest element made in the bowels of any star with the exception of a supernova explosion. All natural elements heavier than iron come from one of those.
In very massive stars, Iron is sometimes generated.
The heaviest element that is highly radioactive is Ununoctium, which has an atomic number of 118.
The information in the question 'What is the heaviest element?' should answer this. Access this by the web link below.