Announcements

The International Day of Human Space Flight commemorates the first manned space flight by the Soviet citizen Yuri Gagarin on 12 April 1961. This day was declared the International Day of Human Space Flight in 2011 by the United Nations General Assembly resolution, to celebrate the beginning of the human space age. It reaffirms the important contribution of space science and technology in achieving sustainable development goals and increasing the well-being of countries and people, as well as ensuring the realization of their aspiration to preserve outer space for peaceful purposes. 

In the course of human exploration of space, we have established many remarkable achievements and breakthrough milestones:

• In 1957, the first human-made Earth satellite, Sputnik I, was launched into outer space;
• In 1961, Yuri Gagarin became the first person to orbit the Earth;
• In 1969, Neil Armstrong became the first human to set foot upon the surface of the Moon;
• In 1996, the first spacecraft in human history successfully landed on Mars;
• In 1998, the International Space Station, a 16-nation international space program, launched for the first time;
• In 2009, the Kepler space telescope was launched, which has helped humans find thousands of exoplanets;
• In 2015, SpaceX successfully launched its Falcon 9 rocket and recovered the first stage. 

To further explore the information about space on the 2023 International Day of Human Space Flight, we have gathered academic research from several journals on the topic of space flight, all of which are open access, enabling practitioners, policymakers and people around the world to access and share up-to-date scientific knowledge. 

Let us celebrate the International Day of Human Space Flight together.

The ORIGIN Space Instrument for Detecting Biosignatures and Habitability Indicators on a Venus Life Finder Mission Aerospace 2022, 9(6), 312; https://doi.org/10.3390/aerospace9060312
Venus Life Finder Missions Motivation and Summary Aerospace 2022, 9(7), 385; https://doi.org/10.3390/aerospace9070385
Theoretical and Observational Constraints on Lunar Orbital Evolution in the Three-Body Earth-Moon-Sun System Astronomy 2022, 1(2), 58-83; https://doi.org/10.3390/astronomy1020007
Energetic Neutral Atom (ENA) Imaging Simulation of the Distant Planetary Magnetosphere and ENA Emission Discussion of the Solar Wind Astronomy 2022, 1(3), 235-245; https://doi.org/10.3390/astronomy1030013
Revisiting Fractional Cosmology Fractal Fract. 2023, 7(2), 149; https://doi.org/10.3390/fractalfract7020149
Special Issue: Orbit Determination Methods for Space Missions and Applications to the Exploration of the Solar System	Special Issue: Feature Papers in the Astronomical Sciences

Whirl Tower Demonstration of an SMA Blade Twist System Actuators 2022, 11(6), 141; https://doi.org/10.3390/act11060141
A Tutorial and Review on Flight Control Co-Simulation Using Matlab/Simulink and Flight Simulators Automation 2022, 3(3), 486-510; https://doi.org/10.3390/automation3030025
Reconfigurable Fault-Tolerant Control for Spacecraft Formation Flying Based on Iterative Learning Algorithms Appl. Sci. 2022, 12(5), 2485; https://doi.org/10.3390/app12052485
Wilderness Search for Lost Persons Using a Multimodal Aerial-Terrestrial Robot Team Robotics 2022, 11(3), 64; https://doi.org/10.3390/robotics11030064
Special Issue: Advances in CubeSat Sails and Tethers	Special Issue: Aerospace Mechanisms and Actuation
Special Issue: Advanced Fault Diagnosis and Fault-Tolerant Control Technology of Spacecraft	Special Issue: Smart Sensors and Devices: Recent Advances and Applications

Investigation of UAV Detection by Different Solid-State Marine Radars Electronics 2022, 11(16), 2502; https://doi.org/10.3390/electronics11162502
Edge Machine Learning for the Automated Decision and Visual Computing of the Robots, IoT Embedded Devices or UAV-Drones Electronics 2022, 11(21), 3507; https://doi.org/10.3390/electronics11213507
Autonomous Tracking of ShenZhou Reentry Capsules Based on Heterogeneous UAV Swarms Drones 2023, 7(1), 20; https://doi.org/10.3390/drones7010020
A Human-Detection Method Based on YOLOv5 and Transfer Learning Using Thermal Image Data from UAV Perspective for Surveillance System Drones 2022, 6(10), 290; https://doi.org/10.3390/drones6100290
Multi-UAV Conflict Resolution with Graph Convolutional Reinforcement Learning Appl. Sci. 2022, 12(2), 610; https://doi.org/10.3390/app12020610
Special Issue: Control and Applications of Intelligent Unmanned Aerial Vehicle	Special Issue: Navigation, Control and Mission Planning Advances for Safe, Efficient and Autonomous Drones