The world’s most famous geyser, Old Faithful in Yellowstone, currently erupts around 20 times a day. These eruptions are predicted with a 90 percent confidence rate, within a 10 minute variation ...

Old Faithful is a geyser in Yellowstone National Park, named after its regularity in erupting hot water and steam, fed by the geothermal activity of the Yellowstone supervolcano underneath.

Old Faithful, the famous geyser in Yellowstone National Park, may go silent after erupting continuously for nearly 800 years, experts have discovered.

The famed Old Faithful geyser erupts into a clear blue sky in a new video taken on Dec. 18 and shared by Yellowstone National Park. The steam shot forth by the geyser matches the snow blanketing ...

Click on the video below for a 360-degree view of Old Faithful in all its glory. Make sure to use your mouse to navigate around the scene. Eruptions can last anywhere from 1.5 to 5 minutes and ...

An Old Faithful eruption lasts 1.5 to 5 minutes and expels 3,700 to 8,400 gallons of boiling water. Members of the Washburn Expedition of 1870 named the geyser for its consistent performance.

But back to Old Faithful. You can watch eruptions on a park webcam. When can you count on the geyser to erupt? On average, every 74 minutes, though it can range from 60 minutes to 110 minutes.

In the last several decades, scientists have observed that Old Faithful's interval between eruptions (IBEs) has changed considerably, stretching from about 60–65 minutes in the 1950s to about 90 ...

BOZEMAN, Mont. (AP) — A thermal spring near Old Faithful in Yellowstone National Park has erupted for the fourth time in the last 60 years, a park official said Thursday. Ear Spring on ...

BOZEMAN, Mont. -- A thermal spring near Old Faithful in Yellowstone National Park has erupted for the fourth time in the last 60 years, a park official said Thursday. Ear Spring on Yellowstone's ...

Instruments for collecting water from Old Faithful during an eruption and in calmer moments. Old Faithful’s geyser cone, where the eruptions exit the earth, can be seen directly behind the ...

One of the most famously reliable geysers in the world may have taken more than a century off duty during medieval times, new research finds. Scientists recently recovered mineralized tree pieces ...