Por eMule puedes utilizar estas direcciones:
ed2k://|file|(Astronomie%20-%20Astronomy)%20USNO-A2.0%20-%20Star%20Catalogue.txt|2975|DBAE4087B5E353906BEDD1AB890970E4|h=QJWDJFTLZ5ML5WCAM47LDXHK6P2TWH3I|/
ed2k://|file|(Astronomie%20-%20Astronomy)%20USNO-A2.0%20(Cd%2001%20Of%2011%20-%20Volume%20Name%20-%20UA001).zip|422549002|6A2C1F490BD54FCD7539E466E2B72044|h=EY6UNBB63X26UIFJV62PIXXHTZPUZUN4|/
ed2k://|file|(Astronomie%20-%20Astronomy)%20USNO-A2.0%20(Cd%2002%20Of%2011%20-%20Volume%20Name%20-%20UA002).zip|438136739|9AF6E391BBC3A602221A85366F4B39D4|h=RFBANCGNULJY7VNWHTU3JGGX5A56HJ37|/
ed2k://|file|(Astronomie%20-%20Astronomy)%20USNO-A2.0%20(Cd%2003%20Of%2011%20-%20Volume%20Name%20-%20UA003).zip|416973327|334E610E269A68D69A51AB4A8C0CF5E2|h=5CSWRJQ34VSHHXMPA55XEZL3D5LAUHW5|/
ed2k://|file|(Astronomie%20-%20Astronomy)%20USNO-A2.0%20(Cd%2004%20Of%2011%20-%20Volume%20Name%20-%20UA004).zip|448031159|99AF30A20C5D23131817B77A56330740|h=72O226HDXEPEMJZYUEKSDH6MIW2JHUDC|/
ed2k://|file|(Astronomie%20-%20Astronomy)%20USNO-A2.0%20(Cd%2005%20Of%2011%20-%20Volume%20Name%20-%20UA005).zip|358743529|3E04DE06FD4EE9E7D4DF7E174E634D2D|h=FWV633WFMSYAYKFR6I7ONUTSZUWJA224|/
ed2k://|file|(Astronomie%20-%20Astronomy)%20USNO-A2.0%20(Cd%2006%20Of%2011%20-%20Volume%20Name%20-%20UA006).zip|452755947|8FA2122ACBD47074A5B695EBB2B63C46|h=FAGJDY26T4G7FW3RFELMLUS4APJQNZQP|/
ed2k://|file|(Astronomie%20-%20Astronomy)%20USNO-A2.0%20(Cd%2007%20Of%2011%20-%20Volume%20Name%20-%20UA007).zip|429965749|BD8A22E7919B48167753D65D9B35231A|h=3QNQXA7BZTHDOT6PYMBC7FNQDFDPXVL7|/
ed2k://|file|(Astronomie%20-%20Astronomy)%20USNO-A2.0%20(Cd%2008%20Of%2011%20-%20Volume%20Name%20-%20UA008).zip|343161214|C93ECA331BA68F295A3DFAD418A3484D|h=3QBYLSVNJ2PKM54WESWHINK6TI4XMEDZ|/
ed2k://|file|(Astronomie%20-%20Astronomy)%20USNO-A2.0%20(Cd%2009%20Of%2011%20-%20Volume%20Name%20-%20UA009).zip|335537332|8680B2B7EBE559C5D8507C5DACA379F6|h=L6EUT3VCV6M2S3ELI34DQ5JBKILRQUY6|/
ed2k://|file|(Astronomie%20-%20Astronomy)%20USNO-A2.0%20(Cd%2010%20Of%2011%20-%20Volume%20Name%20-%20UA010).zip|328905813|17C185EB07C2EFBD21B6C5E9E4DADD3C|h=DVVVEC74QGLAKGVTMJK7NVFGU72LT7GA|/
ed2k://|file|(Astronomie%20-%20Astronomy)%20USNO-A2.0%20(Cd%2011%20Of%2011%20-%20Volume%20Name%20-%20UA011).zip|317888516|78E5AF8845C1A7ACFAFB5C6BFBD8A340|h=TKVHDPQALS5I2A7ELTU4LWD7EYSYGWM3|/
ed2k://|file|(Astronomie%20-%20Astronomy)%20USNO-SA2.0%20(Cd%201%20Of%201%20-%20Volume%20Name%20-%20USNOSA20).zip|473804080|1F3E3E896B177B40E8DA49BE3B6D365B|h=KMK7BY2EU45WOKFZEDAXRPHCRWGA3SUT|/
Eso sí, prepárate para esperar un par de semanas.