Nebular hypothesis
The nebular hypothesis is the most widely accepted model in the field of cosmogony to explain the formation and evolution of the Solar System. It suggests that the Solar System formed from nebulous ma...
Nebular hypothesis - Wikipedia
Video: Astronomers Share First Images Of New Planet In Formation
Australian and US scientists capture imagery of the accumulation of dust and gas particles onto a new planet, which is the process of formation Astronomers have taken the first images of a planet stil...
History of Solar System formation and evolution hypotheses
Ideas concerning the origin and fate of the world date from the earliest known writings; however, for almost all of that time, there was no attempt to link such theories to the existence of a "Solar S...
History of Solar System formation and evolution hypotheses - Wikipedia
ProtoStar
ProtoStar Ltd is a private company incorporated in Bermuda, with U.S. operations based in San Francisco, California and Asian operations based in Singapore. ProtoStar intended to operate an initial f...
ProtoStar - Wikipedia
Protoplanetary disk
A protoplanetary disk is a rotating circumstellar disk of dense gas surrounding a young newly formed star, a T Tauri star, or Herbig Ae/Be star. The protoplanetary disk may also be considered an accre...
Protoplanetary disk - Wikipedia
Planetesimal
Planetesimals /plænɨˈtɛsɨməlz/ are solid objects thought to exist in protoplanetary disks and in debris disks.A widely accepted theory of planet formation, the so-called planetesimal hypotheses, the C...
White dwarf
Artist's concept of white dwarf aging.A white dwarf, also called a degenerate dwarf, is a stellar remnant composed mostly of electron-degenerate matter. They are very dense; a white dwarf's mass ...
White dwarf - Wikipedia
Giant impact hypothesis
The giant impact hypothesis, sometimes called the Big Splash, or The Theia Impact states that the Moon was formed out of the debris left over from an indirect collision between the Earth and an astron...
Giant impact hypothesis - Wikipedia
Planetary nebula
A planetary nebula, often abbreviated as PN or plural PNe, is a kind of emission nebula consisting of an expanding glowing shell of ionized gas ejected from old red giant stars late in their lives. Th...
Planetary nebula - Wikipedia
Formation and evolution of the Solar System
The formation of the Solar System began 4.6 billion years ago with the gravitational collapse of a small part of a giant molecular cloud. Most of the collapsing mass collected in the center, form...
Formation and evolution of the Solar System - Wikipedia
Red giant
A red giant is a luminous giant star of low or intermediate mass (roughly 0.3–8 solar masses (M☉)) in a late phase of stellar evolution. The outer atmosphere is inflated and tenuous, making the...
Red giant - Wikipedia