Results 141 to 150 of about 52,667 (194)

Site selection for manned Mars landings: A geological perspective [PDF]

Issues relating to the selection of initial landing sites for manned Mars missions are discussed from a geological viewpoint. The two prime objectives for initial manned exploration should be the youngest unambiguous lava flows (to tie down the late end ...
Spudis, Paul D.
core   +1 more source

A novel method for computing state transition matrices due to the unscented transform. [PDF]

Celest Mech Dyn Astron
Makadia R, Farnocchia D, Chesley SR, Eggl S.   +3 more
europepmc   +1 more source

The search for life signatures on Mars by the Tianwen-3 Mars sample return mission. [PDF]

Natl Sci Rev
Hou Z, Liu J, Xu Y, Pang F, Wang Y, Qin L, Liu Y, Zhao YS, Wei G, Xu M, Jiang K, Hao C, Ji S, Zhu R, Yu B, Liu J, Sheng Z, Wang J, Zhang C, Li Y.   +19 more
europepmc   +1 more source

Spectrophotometric properties of materials from the Mars Science Laboratory at Gale crater: 1. Bradbury Landing to Cooperstown

, 2022
J. R. Johnson, W. M. Grundy, M. T. Lemmon, Weigang Liang, J. F. Bell, A. G. Hayes, R. Deen   +6 more
openalex   +1 more source

Mid Lift-to-Drag Ratio Rigid Vehicle 6-DoF Performance for Human Mars Entry, Descent, and Landing: A Fractional Polynomial Powered Descent Guidance Approach [PDF]

Defining a feasible vehicle design and mission architecture capable of reliably delivering apayload of 20 metric tons (mt) or more is a great challenge for landing humans on Mars.
Johnson, Breanna J., Lu, Ping, Sostaric, Ronald R.   +2 more
core   +1 more source

The Bioartificial Heart: Our Mission to Mars. [PDF]

Braz J Cardiovasc Surg
Liguori GR.
europepmc   +1 more source

Elemental composition and chemical evolution of geologic materials in Gale crater, Mars: APXS results from Bradbury Landing to the Vera Rubin Ridge

, 2020
J. A. Berger, R. Gellert, N. I. Boyd, P. L. King, M. A. McCraig, C. D. O’Connell‐Cooper, M. E. Schmidt, J. G. Spray, L. M. Thompson, S. J. VanBommel, A. S. Yen   +10 more
openalex   +1 more source

Entry, Descent, and Landing Performance for a Mid-Lift-to-Drag Ratio Vehicle at Mars [PDF]

In an effort to mature the design of the Mid-Lift-to-Drag ratio Rigid Vehicle (MRV) candidate of the NASA Evolvable Mars Campaign (EMC) architecture study, end-to-end six-degree-of-freedom (6DOF) simulations are needed to ensure a successful entry ...
Braden, Ellen M., Cerimele, Christopher J., Johnson, Breanna J., Lu, Ping, Sostaric, Ronald R.   +4 more
core   +1 more source

Seismic evidence of liquid water at the base of Mars' upper crust. [PDF]

Natl Sci Rev
Sun W, Tkalčić H, Malusà MG, Pan Y.
europepmc   +1 more source

Constraints on water activity at the Zhurong landing site in Utopia Planitia, Mars

, 2023
ChengZheng Yong, Ziyao Fang, CongCong Zhang, Junfeng Zhen, Liping Qin   +4 more
openalex   +1 more source