NASA’s unmanned New Horizons spacecraft is closing in on its historic New Year’s flyby target, the most distant world ever studied, a frozen relic of the solar system some four billion miles (6.4 billion kilometers) away.
NASA’s unmanned New Horizons spacecraft is closing in on its historic New Year’s flyby target, the most distant world ever studied, a frozen relic of the solar system some four billion miles (6.4 billion kilometers) away.