Discovered in 1870 by the Washburn Expedition, Old Faithful geyser was named for its frequent and somewhat predictable eruptions, which number more than a million since Yellowstone became the ...

A new climate assessment of Yellowstone warns Old Faithful could stop erupting if temperatures in the park rise another 10F. This would cause a drought, which would dry up the geyser's ground water.

The geyser Old Faithful was named on this day in history, Sept. 18, 1870, after an explorer noticed the eruptions were quite "faithful." It remains a popular tourist attraction.

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.

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Old Faithful, the famed geyser in Yellowstone National Park, erupts with such captivating ...

Intriguingly, sometimes the regions near sunspots are capable of launching multiple jets in a regular pattern, akin to the “Old Faithful” geyser found at Yellowstone National Park(but at ...

Yellowstone's Upper Geyser Basin plays host to Old Faithful along with about 300 other active geysers, according to the National Park Service.

Old Faithful's thermal pools, however, are surprisingly rife with geyser eggs. “This was the largest collection of these rare rocks I have seen in my scientific career,” says Lynne.

Old Faithful is losing steam, according to a Yellowstone National Park geologist who says the geyser may some day shut off. The interval between eruptions has lengthened by about 14 minutes in ...