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On the night of 1612 December 27/28, Galileo sketched the positions of Jupiter’s moons, and included a background "star" which was identified in 2009 to be the planet Neptune.
National Geographic Sky View 70 - 70 mm de telescopio de refractor con soporte Panhandle - 80-00370National Geographic Sky View 70 - 70 mm de telescopio de refractor con soporte Panhandle - 80-00370
Explore Alliance Presents: ¿Cómo lo sabes? - Episodio #49: '' The Hubble Constant Mystery "
Explore Alliance Presents: ¿Cómo lo sabes? - Episodio #46: '' Marte por dentro y fuera "
Explore Alliance Presents: ¿Cómo lo sabes? - Episodio #45: '' Bases de nucleótidos en asteroides "
Explore Alliance Presents: ¿Cómo lo sabes? - Episodio #39: '' Explorando la geología marciana de la órbita "
National Geographic 4K Action Camera with WiFiNational Geographic 4K Action Camera with WiFi
National Geographic
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Explore Alliance Presents: ¿Cómo lo sabes? - Episodio #31: '¡Hit, corre y regrese!'
Explore Alliance Presents: ¿Cómo lo sabes? - Episodio #29: 'Dark Matter Parte 2'
Explore Scientific 1.25" Variable Polarizing FilterExplore Scientific 1.25" Variable Polarizing Filter
Explore Scientific
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Explore Alliance Presents: ¿Cómo lo sabes? - Episodio #24: 'Capturar e identificar las lunas de Saturno'
Explore Alliance Presents: ¿Cómo lo sabes? - Episodio #22: 'The Viking Experiments'
Explore Scientific 2" Variable Polarizing FilterExplore Scientific 2" Variable Polarizing Filter
Explore Scientific
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Bresser 6x18 MonocularBresser 6x18 Monocular
Bresser
Bresser 6x18 monocular Precio de oferta$ 19.99
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Bresser Deluxe Digital Camera Adapter
Bresser
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Condor 10x32 BinocularsCondor 10x32 Binoculars
Bresser
Cóndor 10x32 binoculares Precio de oferta$ 109.99
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Bresser 8x42 WD Nautic BinocularsBresser 8x42 WD Nautic Binoculars
Bresser
Bresser 8x42 WD binoculares náuticos Precio de oferta$ 124.99
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Cradle for Carbon Fiber ED152mm Telescope
Explore Scientific
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Explore Scientific
MD-Parts Precio de oferta$ 1.00
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Tonka R/C Builder Kit- Using drill on the wheel screwTonka R/C Builder Kit - Junior builders can create their own job site with this three-in-one construction truck set that includes a vehicle base and swappable attachments that can be used to turn the truck into an excavator, a concrete mixer or a dump truck
Tonka
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Sun Catcher Solar Eclipse Glasses (2,400-Pack Assortment & Counter Displays)Man looking at the sun while wearing Sun Catcher solar glasses
Chisos 10x50 ED BinocularsChisos 10x50 ED Binoculars
Alpen
Chisos 10x50 ED Binoculars Precio de oferta$ 289.99
Take 15% off w/ code HOLIDAY15
Rechargeable Lithium Battery for DWARF II Smart TelescopeRechargeable Lithium Battery for DWARF II Smart Telescope
Explore Alliance Presents: ¿Cómo lo sabes? - Episodio 56: Principio cosmológico antrópico
Explore Alliance Presents: ¿Cómo lo sabes? - Episodio 56: Principio cosmológico antrópico
Opción de gira grupal para la fiesta estrella del Observatory Mount Wilson 2022 y la Biblioteca HuntingtonOpción de gira grupal para la fiesta estrella del Observatory Mount Wilson 2022 y la Biblioteca Huntington
Explore Alliance Presents: ¿Cómo Lo SABE? - Episodio #33: 'Tres Anillos de Formación Planetaria'
Explore Alliance Presents: ¿Cómo lo sabes? - Episodio #32: 'Vivir en Marte'
Explore Alliance Presents: ¿Cómo lo sabes? - Episodio #30: 'No hay debate en la ciencia'
Explore Alliance Presents: ¿Cómo lo sabes? - Episodio #27: 'Galaxias Ultra Diffuse'
Explore Alliance Presents: ¿Cómo lo sabes? - Episodio #7: 'Aumento: Sí, puedes ... ¡No, no puedes!'
Alpen Tripod Adapter for BinocularsAlpen Tripod Adapter for Binoculars
Alpen
Take 15% off w/ code HOLIDAY15
Digital Micro BowlDigital Micro Bowl
Bresser
Micro Bowl digital Precio de oferta$ 49.95
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Explore FirstLight 127 mm MAK-CasseGrain Telescope con Exos2gt GOTO Mount-FL-MC1271900EXOS2GT
TDM Adapter for Losmandy G11 *Fits old and new versionTDM Adapter for Losmandy G11 *Fits old and new version
Explore Scientific
LG-Parts Precio de oferta$ 1.00
Take 15% off w/ code HOLIDAY15
National Geographic Wide-View Display Weather Station with Outdoor SensorNational Geographic Wide-View Display Weather Station with Outdoor Sensor
Binoculares National Geographic 4x30Binoculares National Geographic 4x30
National Geographic
Binoculares National Geographic 4x30 Precio de oferta$ 14.95
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Nebula Filter H-Alpha 2-inch 7nmNebula Filter H-Alpha 2-inch 7nm
Explore Scientific
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Nebula Filter H-Alpha 1.25-inch 7nmNebula Filter H-Alpha 1.25-inch 7nm
Explore Scientific
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Explore Scientific Dark-Sky Filter 77mm SlimExplore Scientific Dark-Sky Filter 77mm Slim
Explore Scientific
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OPTOLONG 1.25" L-eXtreme Deep-Sky Light Pollution FilterOPTOLONG 1.25" L-eXtreme Deep-Sky Light Pollution Filter
Explore la tarjeta de regalo de Alliance
Explore Alliance
Take 15% off w/ code HOLIDAY15
Pirsch 8x34 BinocularsPirsch 8x34 Binoculars
Bresser
Pirsch 8x34 binoculares Precio de oferta$ 219.99
Take 15% off w/ code HOLIDAY15
Pirsch 10x34 BinocularsPirsch 10x34 Binoculars
Bresser
Pirsch 10x34 binoculares Precio de oferta$ 219.99
Take 15% off w/ code HOLIDAY15
Travel 12x32 BinocularsTravel 12x32 Binoculars
Bresser
Viajar 12x32 binoculares Precio de oferta$ 35.95
Take 15% off w/ code HOLIDAY15
Explore Scientific / Losmandy G-11 UPGRADE with Explore Scientific PMC-Eight GoTo System - UPGRADEExplore Scientific / Losmandy G-11 UPGRADE with Explore Scientific PMC-Eight GoTo System - UPGRADE
TDM Adapter for Vixen GPDX / Celestron CAM/GT5 Mounts
Explore Scientific
Take 15% off w/ code HOLIDAY15