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Related to Planets: solar system, List of planets

be (living) on another planet

slang To be oblivious to one's surroundings or act strangely. I have no idea what the professor said during today's lecture because I was on another planet the whole time. The millionaire investor always says something wacky in the board meetings—it's like he's on living another planet.
See also: another, on, planet

What planet is (someone) on?

What are you thinking? That is an absurd or stupid thing to think or do. (Implies that someone would only do or think that if they were an alien from another planet.) A: "I think they should just do away with taxes altogether!" B: "What planet are you on? Taxes pay for hospitals, roads, our military—literally everything on which our society is built." What planet is he on? He could get someone killed driving that speed along a residential road!
See also: planet, what

what planet is someone on?

COMMON You can say what planet is someone on? to show that you think someone has crazy ideas or does not know about something that most people know about. What planet are these people on? Do they not read their own headlines? Note: This expression is often varied. For example, you can ask what planet does someone live on? or what planet does someone come from?. He thinks hospitals can make major cuts to their budgets. What planet does he live on? Note: You can also say that someone is on another planet. She was just on another planet, I think. She didn't seem to understand that we are ordinary people.
See also: planet, someone, what

what planet are you on?

used to indicate that someone is out of touch with reality. British informal
See also: planet, what

be on another ˈplanet


what ˈplanet is somebody on?

(spoken, humorous) used to suggest that somebody’s ideas are not realistic or practical: He can’t really think we’re going to finish the job today, can he? What planet is he on?
See also: another, on, planet
References in classic literature ?
His idea was that meteorites might be falling in a heavy shower upon the planet, or that a huge volcanic explosion was in progress.
Dense clouds of smoke or dust, visible through a powerful telescope on earth as little grey, fluctuating patches, spread through the clearness of the planet's atmos- phere and obscured its more familiar features.
I remember how jubilant Markham was at securing a new photograph of the planet for the illustrated paper he edited in those days.
Studies show that stars with a high abundance of heavy elements are more likely to host giant planets (S&T: April 2011, page 22).
Read: ( NASA Trappist Discovery Announcement: 40 Light Years Away, Earth-Size Planets That Could Have Water Found
"This work builds on one of the Kepler's most interesting discoveries: that systems of closely-packed, low-density planets are extremely common in our galaxy," said University of California, Santa Cruz astronomer Jonathan Fortney, who was not part of the study.
When scientists first spotted Pluto in 1930, they labeled it a planet because it appeared similar to other planets.
Distinguishing between brown dwarfs and planets is important, says Luhman.
The average surface temperature of the planets in our solar system ranges from frosty to sizzling hot.
"We're not sure if this is just a coincidence or whether this might tell us something about how the planets were formed," Schmitt said.
A team of amateur astronomers has made a fascinating discovery, uncovering evidence of 42 alien planets, one of which is roughly the size of Jupiter and could potentially be habitable by humans.
Strictly speaking, the original five "wandering stars" (in the Copernican sense) are the only sun-orbiting bodies that can rightly be called planets. In changing the definition of planet, the International Astronomical Union is messing with something much bigger than it is.
Summary: TEHRAN (FNA)- A new study provides the most accurate estimate of the frequency that planets that are similar to Earth in size and in distance from their host star occur around stars similar to our Sun.
The planets in our solar system each have their own personality, with different sizes, temperatures and compositions.
The death of a star often has fatal consequences for orbiting planets. But for some worlds, the end of the stellar line could mean a brand-new start.