New Horizons Revealed Pluto’s 2,000-Km Ice Heart and 3.5-Km Water Mountains in 30 Minutes
Updated
Updated · spacedaily.com · Jul 6
New Horizons Revealed Pluto’s 2,000-Km Ice Heart and 3.5-Km Water Mountains in 30 Minutes
2 articles · Updated · spacedaily.com · Jul 6
Summary
7,800 miles above Pluto, New Horizons had barely 30 minutes at closest approach in July 2015 to capture the high-resolution images that exposed Tombaugh Regio, the dwarf planet’s bright heart-shaped terrain.
Those images showed Sputnik Planitia — a 1,200-by-2,000-km nitrogen ice sheet about 4 km thick — with almost no impact craters, indicating a geologically young surface reshaped by convection in the ice.
The flyby also found 3.5-km-tall water-ice mountains, a 200-km-deep blue haze, and probable cryovolcanoes at Wright Mons and Piccard Mons, pointing to a far more active Pluto than scientists expected.
New Horizons gathered 6.25 gigabytes during its nine-day Pluto campaign, but the data took about 15 months to reach Earth because the spacecraft was 3 billion miles away and transmitting at just 1 to 4 kilobits per second.
The findings helped build evidence for a possible liquid-water ocean roughly 100 km below Pluto’s crust, broadening ideas about where active geology — and potentially habitable environments — can exist in the outer solar system.
Could Pluto’s hidden ocean redefine our search for life, challenging the sun-centric view of habitable zones?
With data taking years to download, will future probes use AI to decide which deep space secrets to send home?
New Horizons at Pluto: Unveiling a Dynamic Dwarf Planet and the Secrets of the Kuiper Belt
Overview
NASA's New Horizons spacecraft made a historic close encounter with Pluto on July 14, 2015, after a nearly decade-long journey. This achievement was the result of meticulous preparation, including reviving the spacecraft from hibernation and initiating its active encounter phase. The approach phase began on January 15, 2015, marking a critical period for data collection and trajectory adjustments. Engineers executed precise thruster burns to fine-tune the spacecraft's path, ensuring a successful flyby. These coordinated efforts allowed New Horizons to capture unprecedented data and images, transforming our understanding of Pluto and the distant Kuiper Belt.