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The number of planets has not changed. Our (human) awareness of the planets has changed over time and the definition of "planet" has changed recently. Neptune is the only planet (today's definition where Pluto is not a planet) which was discovered after 1825 (Uranus was discovered in 1781 by Sir William Herschel).
Neptune was predicted and observed by John Couch Adams in 1846 (and independently by Urbain Jean Joseph Le Verrier).
What else can I help you with?
What are the next four planets called?
1825 days
How many states were there in 1825?
There were 24 states by 1825:DelawarePennsylvaniaNew JerseyGeorgiaConnecticutMassachusettsMarylandSouth CarolinaNew HampshireVirginiaNew YorkNorth CarolinaRhode IslandVermontKentuckyTennesseeOhioLouisianaIndianaMississippiIllinoisAlabamaMaineMissouri
How many tons are in 1825 pounds?
.9125
160 percent of 1825 is?
160% of 1825= 160% * 1825= 1.6 * 1825= 2920
How many centimeters in 18.25 m?
1825 cm
How many UFO sightings were reported in 1825?
None recorded.
How many years in 1825 days?
itis 5 years
How many kilometres between Los Angeles and Seattle?
1825 km
How many times does 365 go into 1825?
Exactly five times
How many years are in 1825?
1,825 what? Weeks? Hours? Months? What do you mean?
What is the percent for 1825?
1825 * 100% = 182500%
How many girl planets and how many boy planets are there?
7 boys 1girl
