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Question 1: ________ – the first multiplanet extrasolar planetary system discovered around a main sequence star, found to be so in April 1999
2 AndromedaeUpsilon Andromedae36 AndromedaeAlpha Andromedae

Question 2: 2M1207 – the first imaged system and the first ________ system with a planet discovered[10]
Stellar classificationStarSupernovaBrown dwarf

Question 3: PSR B1257+12 – the first extrasolar planetary system discovered, the first ________ planetary system discovered, the first multi exoplanet system discovered
Neutron starSupernovaPulsarMagnetar

Question 4: [1][2] The Sun together with its planetary system, which includes ________, is known as the Solar System.
MarsMoonEarthNature

Question 5: Accepted theories today argue that a protoplanetary disk forms by gravitational collapse of a ________ and then evolves into a planetary system by collisions and gravitational capture.
Stellar kinematicsStellar classificationStar formationMolecular cloud

Question 6: Planets orbiting pulsars—stars which emit periodic bursts of ________—have been discovered by the slight variations they cause in the timing of these bursts.
ElectromagnetismMaxwell's equationsClassical electromagnetismElectromagnetic radiation

Question 7: ________ - first extrasolar system discovered with a super-Earth planet located within the habitable zone (Gliese 581 d)[11]
Gliese 581 cGliese 581 eEuropa (moon)Gliese 581

Question 8: ________ – The Sun and its planetary system, the first such system discovered
PlutoSolar SystemNeptuneEarth

Question 9: ________ – the largest extrasolar planetary system discovered (5 known planets as of November 6, 2007, along with a distant stellar companion.)[7]
Alpha CancriDelta CancriBeta Cancri55 Cancri

Question 10: Alternatively, planets may somehow form in the ________ surrounding pulsars.
Black holeWhite dwarfEddington luminosityAccretion disc
















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