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Traveling to the past hasn't been outright ruled out primarily due to the complexities of theoretical physics and the nature of time itself. While current scientific understanding, particularly through theories like relativity, suggests significant challenges and paradoxes (like the grandfather paradox), there remain speculative concepts such as wormholes and closed time-like curves that hint at the possibility. Additionally, the lack of experimental evidence or concrete theories definitively proving time travel impossible keeps it an open question in theoretical discussions. Thus, it remains a tantalizing subject in both science and Science Fiction.
What else can I help you with?
Had been sent or has been sent?
"Had been sent" indicates a past action that occurred before another past event, while "has been sent" indicates a completed action that happened recently or is still ongoing in the present.
How many years past since 1966?
It has been 55 years since 1966.
Which state has been hit with the most tornadoes in the past 50 years?
Texas by far has had the highest number of tornadoes in the past 50 years.
What has the moon been like for the past month and week?
The moon goes through phases from new moon to full moon and back again in a month. This past week, the moon has been waning, moving from a full moon to a new moon phase.
Is 'Peter sneezed' past present or future tense?
It is past tense.
Where have they been?
They have been traveling abroad for the past month.
Is Japan ruled by many or ruled by one?
Japan rules itself, although it has been ruled by others in the past.
In Dragon Ball Z or gt Does krillen's power level ever go past one million?
No his hasent been seen to go near one million
Is they ruled a past perfect tense?
they ruled is a past perfect tenseRevision:In Past Perfect tense the verb is always preceded by "had"I had ruledyou had ruledhe/she/it had ruledwe had ruledyou had ruledthey had ruled
Causes for lack of unity in India?
India in the past has been ruled by dictators and tyrants. This may be a cause.
What is the past participle of rule?
The past participle is ruled.
Has mount Rushmore changed in the past 1082 years?
yes it changes all the time. i hear that sometime in 2014 it is supposed to turn purple because of stuff in the air
Is the word traveling or traveling?
The word travelled (also traveled) is the past participle, past tense of the verb to travel. The past participle of the verb is also an adjective: the traveled road; a well travelled adventurer.
What is the past tense of rule?
the past tense of Rule isRuled
What countries are ruled by polity?
past;americaeuropegermanyındonesiagermany
What countries are or have been ruled by anarchy?
Anarchy is chaos and no country is ruled by chaos. It's an oxymoron. More generally, however, nations have fallen into states of anarchy - ex. Somalia in the past decade, Libya when the government broke down.
What dictator ruled cuba for the past 50 years?
sdfh
