Archive for 31 marzo 2017


From Wikimedia Commons

Francois-Hubert Drouais, biography


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Hablamos de Kepler 186f. La primera exotierra descubierta. Se encuentra a 492 años luz de nuestra Tierra y orbita una estrella que denominamos Enana Roja o tipo “M”.

Se trata del planeta más pequeño descubierto que orbita dentro de la zona de habitabilidad de su estrella, aunque en su zona más externa. Similar a la órbita de Marte con el Sol, pero con un periodo orbital menor de 129,9 días. Su temperatura es de -46 ºC de media, suponiendo una atmósfera como la de la Tierra. Su índice de similitud a la Tierra es de un 64 %, igual que Marte.3 Sin embargo, si su atmósfera fuera más densa, su temperatura sería mayor. Por otro lado, aunque orbite una estrella enana roja, puede estar lo suficientemente lejos para que el efecto de anclaje por marea no se produzca, y el planeta pueda rotar.4

Al ser un planeta similar en tamaño…

Ver la entrada original 53 palabras más

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Expedition 50 Flight Engineer Peggy Whitson is set to go on her eighth spacewalk Thursday morning and surpass astronaut Suni Williams’ record for the most spacewalks by a female astronaut. Whitson’s last spacewalk was on Jan. 6 with Commander Shane Kimbrough when she hooked up new lithium-ion batteries and inspected the Alpha Magnetic Spectrometer.

Read more about spacewalks at the International Space Station.

Thursday’s spacewalk will see Whitson and Kimbrough finish cable connections at the Pressurized Mating Adapter-3 just recently attached to the Harmony module’s space-facing port. The PMA-3 relocation gets the station ready for the new International Docking Adapter-3 set to be delivered on a future SpaceX Dragon cargo mission.

European Space Agency astronaut Thomas Pesquet, who conducted last week’s spacewalk with Kimbrough, will assist the duo in and out of their spacesuits and monitor the activities from inside the station. The spacewalkers are scheduled to exit the Quest airlock Thursday at 8 a.m. EST for 6.5 hours of station maintenance work. NASA TV will cover all the spacewalk activities beginning at 6:30 a.m.


Source: blogs.nasa.gov

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Bird gif


Source: yesartplease

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Challenger 650


Most successful large business aircraft platform of all time with over 1,000 deliveries and counting.

The widest-in-class cabin means larger seats, bigger monitors and the space to move around freely.

Industry-leading connectivity, immersive sound, ergonomically‑positioned touch screens, and a cabin management system that effortlessly brings it all together.

With the lowest direct operating costs in its class, charter operators and corporations trust the Challenger 650 aircraft.

The most reliable by design. With over 5 million flight hours, the Challenger 650 platform was designed to deliver on safety and peace of mind.

Challenger 650


From our signature metal trim to the clever foldout tables, every aspect of our cabin has been carefully designed for an unrivalled private jet experience. Whether it’s for work or pleasure, the Challenger 650 aircraft delivers on its promise of class-leading comfort.

The Challenger 650 is the only aircraft in its class with available seating for up to 12 passengers. With all seats filled, a wider cabin means that there’s still plenty of room for comfort.


Challenger 650


Maximum range 4,000 nm 7,408 km
(Theoretical range with NBAA IFR Reserves, ISA, LRC, 6 pax /2 crew. Actual range will be affected by speed, weather, selected options and other factors.)
Top speed 0.85 488 893
Long-range cruise speed 0.74 424 785
Airfield Performance
Takeoff distance (SL, ISA, MTOW) 5,640 ft 1,720 m
Landing distance (SL, ISA, MLW) 2,775 ft 846 m
Operating Altitude
Maximum operating altitude 41,000 ft 12,497 m
Initial cruise altitude (MTOW) 37,000 ft 11,278 m


Source: Bombardier Business Aircraft


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Beautiful colors



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