The set of the orbital angular-momentum reversal, or H-reversal, sailcraft trajectory was born
as a type of unconventional precursor interstellar mission trajectory by using …

This paper presents an overview of space mission concepts for disrupting or pulverizing
hazardous asteroids, especially with warning time shorter than approximately 10 years. An …

Several national governments have recently taken substantial steps toward creating policies
that apply to new, path-breaking activities at asteroids in outer space. Near-term activities on …

An asteroid impact can potentially destroy life on this planet. Therefore, asteroids should be
prevented from impacting the Earth to impede severe disasters. Nuclear explosions are …

This paper is part of an integrated study by NASA and the NNSA to quantitatively understand
the response timeframe should a threatening Earth-impacting near-Earth object (NEO) be …

This paper focuses on the approach which enables us to capture an asteroid using the lunar
flyby. Assume that the asteroid is able to enter the Earth–Moon system. The orbits of the …

Abstract Near-Earth Objects (NEOs) are asteroids and comets whose orbits approach or
cross Earth׳ s orbit. NEOs have collided with our planet in the past, sometimes to devastating …

A critical requirement for outposts and settlements on the Moon and Mars is the use of in-situ
resources to create pressurized, human-rated habitats with low mass (ie, high tensile …

With increased awareness of the possibility of an asteroid impacting the Earth, there is a
corresponding increased interest in developing techniques for mitigating the asteroid impact …

近地小行星(NEA) 撞击地球是人类长期面临的重大潜在威胁, 基于监测预警和风险评估,
实施在轨处置是防范化解NEA 撞击风险的最佳途径. 本文概述了国际近地小行星撞击风险应对 …