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The site shows example sentences for English words. How the word or phrase could be used in a sentence?
" ... Although we've known that black holes must exist for a very long time, we were only able to detect... [+] their gravitational influence on other sources of light and matter. This brought an indirect understanding and measurement of their properties, but only in the last few years, with the advent of direct detection observatories like LIGO, have we measured their properties directly. ... "
" ... Cubesats can’t do the kind of powerful observations the big space telescopes can do – they just can’t gather enough light to look that far out into space and see that much detail. But ASTERIA proved that they can focus on a single point and watch, with almost endless patience. That’s something larger space telescopes technically can do, but it’s usually not a luxury they have. Many astronomers need access to these big observatories for their research, so even though they can observe 24/7, their time is a very, very hot commodity. But a constellation of tiny cubesats – like the ones astronomer Sara Seager is working on, each of which will be twice the size of ASTERIA – could point at a particular star and watch for tiny dips in light that might mark the passage of an exoplanet. The larger telescope could follow up on anything that seems to be worth its time. ... "
" ... Purposely traveling to nature-rich destinations that experience less light pollution, allowing you to spot stars more easily, as well as visiting observatories and astronomy-related organizations with ecotourism in mind, defines Astrotourism. Point your nose skywards, try out one of these star-filled experiences, and appreciate the night sky in a new way. ... "
" ... Space-based observatories, like NASA's Wise and Spitzer, have seen through the dust, revealing hidden stars and gas. ... "
" ... The Mauna Kea observatories on the Big Island of Hawaii. ... "