Which two celestial bodies orbit the Sun?

"Comets and Asteroids" are the two celestial bodies orbit the Sun.

Explanation:

Asteroids comprise of metals and rocky matter while comets consist of ice, dust, and rocky material. The key difference among asteroids and comets, as in what they are made of, is their structure. These were created some 4.5 billion years ago early in the history of the solar system.

Comets circle the Sun much as planets and asteroids do, except that a comet typically has a very extended orbit. When the comet hits the Sun, a few of the ice begins melting and cooling off, together with dust particles. Such particles and gases surround a ring, called a coma, around the ring.

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.