All we could carry was barely enough to land us on the hypothetical planet.

Between 1866 and 1878 no reliable observations of the hypothetical planet were made.

Scientists in the 20th century dubbed this hypothetical planet Phaeton.

The vulcanoids take their name from this hypothetical planet.

They are named after the hypothetical planet Vulcan, whose existence was disproven in 1915.

There are three main ideas regarding hypothetical planets between Mars and Jupiter.

Salmon extends this view to what he calls mythical objects, like the hypothetical planet, Vulcan.

This hypothetical planet has been named Vulcan.

He calculates the mass, orbit, etc. of this hypothetical planet and then asks an experimental astronomer to test his hypothesis.

A hypothetical planet between Mars and Jupiter has long been thought to have occupied the space where the asteroid belt is currently located.

According to Parks, the hypothetical Planet X is actually an extinct sun, a brown dwarf star tied to a group of comets.

Vulcan (hypothetical planet)

Tyche (hypothetical planet), a hypothesized gas giant planet located in our far outer Solar System.

Hypothetical planet (disambiguation)

A hypothetical Planet X has also figured in speculation about the cause of mass extinctions on Earth that seem to occur regularly every 26 million years.

The presence of a moderately close companion could disrupt the orbit of a hypothetical planet in HD 10307's habitable zone.

Vulcan, a hypothetical planet once proposed to exist in an orbit between Mercury and the Sun, and 2212 Hephaistos, discovered 1978.

From the perspective of an observer on a hypothetical planet around Vega, the Sun would appear as a faint 4.3 magnitude star in the Columba constellation.

For hypothetical planets, see Hypothetical planet (disambiguation)

Counter-Earth was a hypothetical planet sharing an orbit with Earth, but on the opposite side of the Sun (and hence always invisible from Earth).

Contact has been closely allied with the SETI Institute, and its early participants created the hypothetical planet Epona.

A hypothetical planet or hypothetical planetary object is a planet or similar body whose existence is not proven, but is speculated on by some.

In the fictional Marvel Universe, there have been three versions of the hypothetical planet known as Counter-Earth, each one a near-duplicate of Earth.

Vulcan was a hypothetical planet supposed to revolve around the Sun inside the orbit of Mercury, invoked to explain certain irregularities in Mercury's orbit.

Lowell's greatest contribution to planetary studies came during the last decade of his life, which he devoted to the search for Planet X, a hypothetical planet beyond Neptune.