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Pennsylvania Route 228 (PA 228) is a 21.1-mile-long (34.0 km) state highway located in Butler County, Pennsylvania. The western terminus is at U.S. Route 19 (US 19) in Cranberry Township. The eastern terminus is at PA 356 in Buffalo Township. Because of the continued growth in Cranberry Township, Seven Fields, and Adams Township, PennDOT is in ...
Mars is located in southern Butler County at 40°41′48″N 80°0′44″W (40.696594, −80.012205), [5] about halfway between the cities of Pittsburgh and Butler. The small community is nestled in a small valley along Breakneck Creek. Pennsylvania Route 228 bypasses the borough to the south, leading east 4 miles (6 km) to Pennsylvania Route ...
Pennsylvania Route 8. Pennsylvania Route 8 (PA 8) is a major 148.6-mile-long (239.1 km) state route in western Pennsylvania. Officially, PA 8 is named the William Flinn Highway. Its southern terminus is at Interstate 376 (I-376)/ U.S. Route 22 (US 22)/ US 30 in Pittsburgh. Its northern terminus is US 20 in Erie.
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The route intersects the western terminus of PA 234. US 30 continues east with one eastbound lane and two westbound lanes before narrowing to a two-lane road. The route curves southeast in Hilltown and gains a center left-turn lane. The road passes through McKnightstown, where it narrows to two lanes.
The lowest energy transfer to Mars is a Hohmann transfer orbit, which would involve a roughly 9-month travel time from Earth to Mars, about 500 days (16 mo) [citation needed] at Mars to wait for the transfer window to Earth, and a travel time of about 9 months to return to Earth. [9] [10] This would be a 34-month trip.
Earth orbit (yellow) compared to a circle (gray) Earth orbits the Sun at an average distance of 149.60 million km (92.96 million mi), or 8.317 light-minutes, [1] in a counterclockwise direction as viewed from above the Northern Hemisphere. One complete orbit takes 365.256 days (1 sidereal year), during which time Earth has traveled 940 million ...
Time travel is a concept in philosophy and fiction, particularly science fiction. In fiction, time travel is typically achieved through the use of a device known as a time machine. The idea of a time machine was popularized by H. G. Wells's 1895 novel The Time Machine. [1] It is uncertain whether time travel to the past would be physically ...
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