hypothetical star

Scientists believe its engine is a massive black hole, a hypothetical star so dense that light cannot escape its gravitational grip.

Specific hypothetical stars include:

Nemesis (hypothetical star)

They were pulled from their original positions by an as-yet-undiscovered companion star orbiting the Sun: see Nemesis (hypothetical star).

Hypothetical star (disambiguation)

A hypothetical star is a star, or type of star, that is speculated to exist but has yet to be definitively observed.

Believers in Planet X/Nibiru have often confused it with Nemesis, a hypothetical star first proposed by physicist Richard A. Muller.

Perhaps this happened, they said, when periodic returns of Nemesis, a hypothetical star in a wide orbit around the Sun, disrupted the outer comets and sent some raining upon Earth.

The Berkeley group attributed such regularity to a hypothetical star, named Nemesis, that periodically enters and disrupts the cloud of comets on the outer reaches of the solar system.

Because the stellar population numbers go III, II, I as time passes, a convention that astrophysicists may yet have cause to regret, we must name these hypothetical stars 'Population 0'.

The song "Nemesis" is apparently about the hypothetical star orbiting the Sun , although the video makes it clear that the comic-book anti-hero Nemesis the Warlock was also on the band's mind.

A few astronomers sometimes use the term "Death Star" to describe Nemesis, a hypothetical star postulated in 1984 to be responsible for gravitationally forcing comets and asteroids from the Oort cloud toward Earth.

According to the Berkeley scientists, this finding, along with the discoveries of iridium associated with impacts 34 million years ago and with the dinosaur extinctions 66 million years ago, fits into the cycle of the hypothetical star.

"Now," Foraker continued, replacing the star map with a detailed schematic of a hypothetical star system, "let's assume that this is our objective and that the Manties only have about half the sensor platforms they'd really need to cover its perimeter.

A helium star is also a term for a hypothetical star that could occur if two helium white dwarfs with a combined mass of at least 0.5 solar masses merge and subsequently start nuclear fusion of helium, with a lifetime of a few hundred million years.