The phrase "a certain planet" is correct and usable in written English.
It can be used when referring to a specific planet without naming it directly, often in a context where the identity of the planet is either known or implied.
Example: "Astronomers have discovered signs of life on a certain planet in the distant galaxy."
Alternatives: "one particular planet" or "a specific planet".
Moreover, it did not suddenly arise when some physical particles on a certain planet chanced to come into the right configuration; rather, there has been consciousness in the cosmos from the very beginning of time.
Each of six segments was dedicated to a certain planet's moon or moons, invoking astronomical observations and myth.
The robots will have to decide if a certain planet should receive microbes and the chance to evolve life.
When we investigate the trajectory of a certain planet, for instance, we first eliminate points that are fallacious from the observation records and then fit a smooth curve to the remaining ones.
It was inside the planetarium with the stars as a background, and I was in front of it pretending I was in a rocket ship flying through space, then I'd land on certain planets and become a monster.
"I recently had a half-hour conversation with a man from the States who said he had spent some years studying how a particular carving in the chapel aligns with certain planets," said Stuart Beattie, project director for the Rosslyn Chapel Trust.
Johannes Kepler used the figure panis quadragesimalis — the Lenten pretzel — to illustrate the knotty path certain planets would have to take to circle the Earth, but supposing the pretzel, not the sun, is the center of the universe, then Erwin Schrottner, the owner of Café Katja, might be its Copernicus, the guy who has it all figured out.
By Lauren Collins Johannes Kepler used the figure panis quadragesimalis — the Lenten pretzel — to illustrate the knotty path certain planets would have to take to circle the Earth, but supposing the pretzel, not the sun, is the center of the universe, then Erwin Schrottner, the owner of Café Katja, might be its Copernicus, the guy who has it all figured out.
However, in his astrological writings, the Jews are no different from other peoples, in that they too are associated with certain planets and signs; this point was not lost upon his super-commentators.
With terrorism, war and now SARS casting a certain pall over the planet, another part of the country is emerging as a distant safe haven.
So, this weekend, we will be doing our best to hold our planet a certain way so that the most essential pattern is evident.
