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  2. Kepler-186f - Wikipedia

    en.wikipedia.org/wiki/Kepler-186f

    Kepler-186f [2] [3] (also known by its Kepler object of interest designation KOI-571.05) is an Earth-sized exoplanet orbiting within the habitable zone of the red dwarf star Kepler-186, [4] [5] [6] the outermost of five such planets discovered around the star by NASA's Kepler space telescope.

  3. Cepheus (constellation) - Wikipedia

    en.wikipedia.org/wiki/Cepheus_(constellation)

    The star's radius has been estimated to be from 972 solar radii (4.52 AU) [12] to 1,420 solar radii (6.6 AU). [13] If it were placed at the center of the Solar System, it would likely extend past the orbit of Jupiter. The second, VV Cephei A, is a semiregular variable star, located approximately 5,000 light-years from Earth.

  4. List of stars in Corona Borealis - Wikipedia

    en.wikipedia.org/wiki/List_of_stars_in_Corona...

    component of the σ CrB system S CrB: S: 136753: 75143: 15 h 21 m 23.80 s ... solar twin with brown dwarf companion RR CrB: RR: 140297: 76844: 15 h 41 m 26.23 s +38 ...

  5. Photovoltaic system - Wikipedia

    en.wikipedia.org/wiki/Photovoltaic_system

    A photovoltaic system, also called a PV system or solar power system, is an electric power system designed to supply usable solar power by means of photovoltaics.It consists of an arrangement of several components, including solar panels to absorb and convert sunlight into electricity, a solar inverter to convert the output from direct to alternating current, as well as mounting, cabling, and ...

  6. Space-based solar power - Wikipedia

    en.wikipedia.org/wiki/Space-based_solar_power

    1998: The Space Solar Power Concept Definition Study (CDS) identifies credible, commercially viable SSP concepts, while pointing out technical and programmatic risks. 1998: Japan's space agency begins developing a space solar power system (SSPS), a program that continues to the present day. [109]

  7. Kepler-90 - Wikipedia

    en.wikipedia.org/wiki/Kepler-90

    The Kepler-90 system is one of only two eight-planet candidate systems from Kepler, together with Kepler-385, and the second to be discovered after the Solar System. It was also the only seven-planet candidate system from Kepler before the eighth was discovered in 2017. All of the eight known planet candidates orbit within about 1 AU of Kepler-90.

  8. Isaac Newton - Wikipedia

    en.wikipedia.org/wiki/Isaac_Newton

    He used his mathematical description of gravity to derive Kepler's laws of planetary motion, account for tides, the trajectories of comets, the precession of the equinoxes and other phenomena, eradicating doubt about the Solar System's heliocentricity. [16] Newton solved the two-body problem, and introduced the three-body problem. [17]

  9. Cryogenic energy storage - Wikipedia

    en.wikipedia.org/wiki/Cryogenic_energy_storage

    A 300 kW, 2.5 MWh storage capacity [25] pilot cryogenic energy system developed by researchers at the University of Leeds and Highview Power [26] that uses liquid air (with the CO 2 and water removed as they would turn solid at the storage temperature) as the energy store, and low-grade waste heat to boost the thermal re-expansion of the air ...