A nebula is a giant cloud of dust and gas in space. Some nebulae (more than one nebula) come from the gas and dust thrown out by the explosion of a dying star, such as a supernova. Other nebulae are regions where new stars are beginning to form. A nebula is a giant cloud of dust and gas in space.
A nebula is a giant cloud of dust and gas in space. Some nebulae come from the gas and dust thrown out by the explosion of a dying star, such as a supernova. Other nebulae are regions where new stars are beginning to form.
The Solar System is the gravitationally bound system of the Sun and the objects that orbit it, either directly or indirectly.
Solar nebula, gaseous cloud from which, in the so-called nebular hypothesis of the origin of the solar system, the Sun and planets formed by condensation.
The definition of militarism is a belief that a strong military force should be maintained and used aggressively to defend or promote national interests.
