how old is the earth?

Answer 1

about 4.6 billion years

Answer 2

The Bible does not say the earth is 6000 years old. I defy anyone to find it there. That was a calculation done by a Bishop Usher who took some of the genealogical numbers from the bible and arrived at a silly conclusion. Lots of christians accept the number as biblical, but it isn't.

The actual age appears to be roughly 4.5 Billion years old plus or minus about 100 million.

It also depends how late in the accretion period you wish to make the earth an official planet. I've never seen official definitions. Stellar ignition might be the cutoff date, but considerable numbers of impacts probably continued for quite some time.

Answer 3

the generally accepted age for the Earth and the rest of the solar system is about 4.55 billion years (plus or minus about 1%). This value is derived from several different lines of evidence.
The most direct means for calculating the Earth's age is a Pb/Pb isochron age, derived from samples of the Earth and meteorites. This involves measurement of three isotopes of lead (Pb-206, Pb-207, and either Pb-208 or Pb-204). A plot is constructed of Pb-206/Pb-204 versus Pb-207/Pb-204.

Answer 4

4.54 billion years old

Earth (IPA: /ɜrθ/) is the third planet from the Sun and is the largest of the terrestrial planets in the Solar System, in both diameter and mass. It is also referred to as the Earth, Planet Earth, Gaia, Terra,[4] and "the World".

Home to millions of species[5] including humans, Earth is the only place in the universe where life is known to have originated. Scientific evidence indicates that the planet formed 4.54 billion years[6][7][8][9] ago, and life appeared on its surface within a billion years. Since then, Earth's biosphere has significantly altered the atmosphere and other abiotic conditions on the planet, enabling the proliferation of aerobic organisms as well as the formation of the ozone layer which, together with Earth's magnetic field, blocks harmful radiation, permitting life on land.

Earth's outer surface is divided into several rigid segments, or tectonic plates, that gradually migrate across the surface over periods of many millions of years. About 71% of the surface is covered with salt-water oceans, the remainder consisting of continents and islands; liquid water, necessary for all known life, is not known to exist on any other planet's surface.[10][11] Earth's interior remains active, with a thick layer of relatively solid mantle, a liquid outer core that generates a magnetic field, and a solid iron inner core.

Earth interacts with other objects in outer space, including the Sun and the Moon. At present, Earth orbits the Sun once for every roughly 366.26 times it rotates about its axis. This length of time is a sidereal year, which is equal to 365.26 solar days.[12] The Earth's axis of rotation is tilted 23.4°[13] away from the perpendicular to its orbital plane, producing seasonal variations on the planet's surface with a period of one tropical year. Earth's only known natural satellite, the Moon, which began orbiting it about 4.53 billion years ago, provides ocean tides, stabilizes the axial tilt and gradually slows the planet's rotation. A cometary bombardment during the early history of the planet played a role in the formation of the oceans.[14] Later, asteroid impacts caused significant changes to the surface environment. Long term periodic changes in the Earth's orbit, caused by the gravitational influence of other planets, are believed to have given rise to the ice ages that have intermittently covered significant portions of Earth's surface in glacial sheets.

Answer 5

Check out Halos.com and you will find the truth. The planet-wide layers of granite reveal the truth about our young earth. Don't be fooled by the commonly accepted rhetoric

Answer 6

The earth is roughly 4.5 billion years old.

Answer 7

the generally accepted age for the Earth and the rest of the solar system is about 4.55 billion years (plus or minus about 1%).

Answer 8

Do a google search to http://www.talkorigins.org/faqs/faq-age-of-earth.html. Pretty interesting. Says the old orb is about 4.5 billion years old . . .

Answer 9

About 200 billion years

Answer 10

Last estimate is about 4.5 billion years. The Bible says 6,000.