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  2. Orders of magnitude (length) - Wikipedia

    en.wikipedia.org/wiki/Orders_of_magnitude_(length)

    The millimetre (SI symbol: mm) is a unit of length in the metric system equal to 10 −3 metres (⁠ 1 / 1 000 ⁠ m = 0.001 m). To help compare different orders of magnitude , this section lists lengths between 10 −3 m and 10 −2 m (1 mm and 1 cm).

  3. Unit of time - Wikipedia

    en.wikipedia.org/wiki/Unit_of_time

    About 31,709 years. megaannum: 10 6 yr: Also called "megayear". 1000 millennia (plural of millennium), or 1 million years (in geology, abbreviated as Ma). petasecond: 10 15 s: About 31 709 791 years. galactic year: 2.3 × 10 8 yr: The amount of time it takes the Solar System to orbit the center of the Milky Way Galaxy (approx 230 000 000 years ...

  4. Orders of magnitude (time) - Wikipedia

    en.wikipedia.org/wiki/Orders_of_magnitude_(time)

    31.6 Ts (1000 ka, 1 Ma): One mega-annum (Ma), or one million years 79 Ts (2.5 Ma): The approximate time since earliest hominids of genus Australopithecus 130 Ts (4 Ma): The typical lifetime of a biological species on Earth 137 Ts (4.32 Ma): The length of the mythic unit of mahayuga, the Great Age, in Hindu mythology. 10 15: petasecond Ps

  5. Mega- - Wikipedia

    en.wikipedia.org/wiki/Mega-

    Mega is a unit prefix in metric systems of units denoting a factor of one million (10 6 or 1 000 000). It has the unit symbol M. It was confirmed for use in the International System of Units (SI) in 1960. Mega comes from Ancient Greek: μέγας, romanized: mégas, lit. 'great'. [1]

  6. List of metric units - Wikipedia

    en.wikipedia.org/wiki/List_of_metric_units

    The angstrom (symbol Å) is a unit of distance used in chemistry and atomic physics equal to 100 pm. The micron (μ) is a unit of distance equal to one micrometre (1 μm). The basic module (M) is a unit of distance equal to one hundred millimetres (100 mm). The myriametre (mym) is a unit of distance equal to ten kilometres (10 km).

  7. Geologic time scale - Wikipedia

    en.wikipedia.org/wiki/Geologic_time_scale

    The geologic time scale is a way of representing deep time based on events that have occurred throughout Earth's history, a time span of about 4.54 ± 0.05 Ga (4.54 billion years). [3] It chronologically organises strata, and subsequently time, by observing fundamental changes in stratigraphy that correspond to major geological or ...

  8. Amateur mathematician discovers largest known prime number ...

    www.aol.com/amateur-mathematician-discovers...

    New prime is 16 million digits larger than previous one. New prime is 16 million digits larger than previous one. Skip to main content. 24/7 Help. For premium support please call: 800-290-4726 ...

  9. 1,000,000 - Wikipedia

    en.wikipedia.org/wiki/1,000,000

    A million millilitres or cubic centimetres (one cubic metre) of water has a mass of a million grams or one tonne. Weight: A million 80-milligram (1.2 gr) honey bees would weigh the same as an 80 kg (180 lb) person. Landscape: A pyramidal hill 600 feet (180 m) wide at the base and 100 feet (30 m) high would weigh about a million short tons.