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1 day ago · The Cretaceous is divided into Early and Late Cretaceous epochs, or Lower and Upper Cretaceous series. In older literature, the Cretaceous is sometimes divided into three series: Neocomian (lower/early), Gallic (middle) and Senonian (upper/late). A subdivision into 12 stages, all originating from European stratigraphy, is now used worldwide. In ...
6 days ago · The Block 1B version of the rocket is capable of hoisting 84,000 pounds to the Moon using a more powerful upper stage, and it also features an adapter with more than 10,000 cubic feet of space to send large cargos, such as I-Hab, to the Moon along with the crew.
2 days ago · Projected to place approximately 400,000 pounds (180 t) into orbit, the Ares V would have surpassed the Saturn V in payload capability. An upper stage, the Earth Departure Stage, would have utilized a more advanced version of the J-2 engine, the J-2X. Ares V would have placed the Altair lunar landing vehicle into low Earth orbit.
- $185 million in 1969–1971 dollars ($1.23 billion in 2019 value).
- 13 (Apollo: 12 Skylab: 1)
- 3
3 days ago · Obstructive sleep apnea (OSA) is the most common sleep-related breathing disorder and is characterized by recurrent episodes of complete or partial obstruction of the upper airway leading to reduced or absent breathing during sleep.
- Obstructive sleep apnoea
4 days ago · Facts in Brief. Launch Date: 1963-06-16 Launch Vehicle: Modified SS-6 (Sapwood) with 1st Generation Upper Stage Launch Site: Tyuratam (Baikonur Cosmodrome), U.S.S.R Mass: 4713 kg. Funding Agency. Unknown (U.S.S.R) Discipline. Human Crew. Additional Information. Launch/Orbital information for Vostok 6. Telecommunications information for Vostok 6.
5 days ago · Re: Starship IUS-Style Upper Stage for Deep Space Probes. Most science spacecraft use hydrazine thruster, whose effluents are N2, H2 and a little ammonia (N2H3) Ammonia is NH3. AFAICT N2H3 doesn't exist as a neutral chemical - it only exists as an ion N2H3+.
4 days ago · Facts in Brief. Launch Date: 1969-01-14 Launch Vehicle: Modified SS-6 (Sapwood) with 2nd Generation (Longer) Upper Stage Launch Site: Tyuratam (Baikonur Cosmodrome), U.S.S.R Mass: 6000 kg. Funding Agency. Unknown (U.S.S.R) Discipline. Human Crew. Additional Information. Launch/Orbital information for Soyuz 4.
