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" ... However, once you get beyond a few hundred parsecs, this kind of measurement gets really hard to do, and even with the best telescopes, parallax is only measurable out to about 1000 parsecs. Considering that we’re sitting 8,000 parsecs from the center of our galaxy, that doesn’t get very far. We’re going to need another method to get even farther away. ... "
" ... If the Sun were located 10 parsecs (33 light years) away, not only would LUVOIR be able to directly ... [+] image Jupiter and Earth, including taking their spectra, but even the planet Venus would yield to observations. A significantly closer Sun-like star could even reveal a potential stripped-core world if the orbital parameters were favorable. ... "
" ... Kepler-186f (also known by its Kepler Object of Interest designation KOI-571.05) is an exoplanet ... [+] orbiting the red dwarf Kepler-186, about 560 light-years (171 parsecs, or nearly 5.298_1015 km) from the Earth. It is the first planet with a radius similar to Earth's to be discovered in the habitable zone of another star. 2014 ... "
" ... While practically all the stars in the night sky appear to be single points of light, many of them... [+] are multi-star systems, with approximately 50% of the stars we've seen bound up in multi-star systems. Castor is the system with the most stars within 25 parsecs: it is a sextuple system. ... "