Since august 1973, a kinetics analysis of monopropellant hydrazine decomposition over both iridium (Ir) anchored on Alumina and unsupported one (Ir) has been discussed in smith's work . So, catalyst material attrition chemical change in hydrazine monopropellant locomotive are analyzed in the light of this kinetic activeness. Also, suggestions are made regarding further interpretation of basic processes taking place in monopropellant motor cold starts. So, as well known catalysts-based on noble metals and related composites have been advisable and demonstrated as highly potential catalysts for a wide range of catalysis, environmental applications. But the issues of those noble materials are the high costs, limited reserves resources, stability and durability, and as well as effect of poisoning species. Hence, in the case of space self-propelled vehicle technologies, iridium catalysts have demonstrated powerful performance in the decomposition of the monopropellant hydrazine. So, due to its noble features and catalytic limits, molybdenum (Mo) materials are among the recently introduced catalysts for this interesting reaction for the space explorations. Specially, in this research article, it is summarized the newly developed molybdenum (Mo)-based catalysts for hydrazine monopropellant self-propelled vehicle applications. In this Perspectives, Hinckel, J., et al have established a work on the cost-effective catalysts for monopropellant hydrazine thrusters, for space vehicles' mission. In 1997, it is demonstrated from Rodrigues, J.A.J., et al that both molybdenum nitride (MoNx) and carbides (MoCs), and as well as tungsten (W) catalysts behave as noble metal catalysts in a wide range of catalysis reactions. Indeed, these materials were tested in a 2 newton hydrazine microthruster. It is notified that their catalytic performance was analogous to that of the conventional catalyst (Ir/Al2O3), with respect to combustion delay and thrust. Particularly, it found that their mechanical resistance is far beyond to that of iridium based catalysts. Indeed, this discovery further helped to accelerate the program of affordable catalysts synthesis and utilization in monopropellant hydrazine thrusters applications. In the same trends, in a monopropellant thruster (10 N), a series of supported molybdenum nitride (MoNx/γ-Al2O3) catalysts was fully analyzed with a discussion of Mo charges, as shown in Chen's research article . In fact, the proposed catalysts with specially about 23 wt% Mo (1.5 monolayers) exhibited the best catalytic features of monopropellant fuel decomposition. So, this boosted catalytic activities of (MoNx/γ-Al2O3) catalyst was very closed to the state-of-the-art (Ir/γ-Al2O3) catalyst. Therefore, it is thought that the improved performance of (MoNx/γ-Al2O3) might be coming from to the reduction of the oxide layer formed in the passivation process. A recently published article from Cheng's group discussed the production of hydrogen gas from hydrous hydrazine (N2H4*H2O) by catalytic decomposition reaction. As (N2H4*H2O) is a potential H2 storage material for fuel cells owing to its higher H2 content, easy storage, and as well as facial transportation. This review analysis fully shows the numerous designed and characterized catalysts for this issue, and considerably describes the routes of which catalysts performance might be boosted for hydrous hydrazine decomposition to yield hydrogen and nitrogen gases (H2/N2) through the direct pathway. Furthermore, it is described from Chen's research group that Al2O3-supported molybdenum carbides catalyst (Mo2C/γ-Al2O3) is powerfully active like an Ir/γ-Al2O3 catalyst for the catalytic decomposition of hydrazine in monopropellant thruster. In fact, it is found that pure phases of γ-Mo2N, W2N, NbN, and W2C could be suggested as a possible substitutes of the costly catalyst (Ir/γAL2O3) for monopropellant hydrazine decomposition in space technology. These materials performances is almost the same to that of Ir/γ-Al2O3 catalyst or inferior. Moreover, both Al2O3-supported and unsupported molybdenum phosphide (MoP) were designed and used as potential candidate catalyst for hydrazine decomposition in comparison with Mo2N catalysts performance previously reported as shown in Cheng's work . The MoP charges was found to boost the catalytic activity of MoP/Al2O3 materials, and was very stable N2H4 decomposition when compared to the supported Mo2N catalysts' performance. It is introduced from Chen's work that the reaction path of N2H4 disintegration over molybdenum nitride catalysts seems to be identical as that of Ir/γ-Al2O3 catalyst. So, it is notified that below 673 K, N2H4 decomposes into N2 and NH3. However, above this value, N2H4 decomposes into N2 and NH3 first, and then the produced ammonia further dissociates into the syngas (N2/H2). therefore, according to in situ FT-IR spectroscopy analysis, the Mo site of the Mo2N/γ-Al2O3 catalyst constitutes major place for both the hydrazine adsorption and decay. Moreover, it is proved also from the above author's research article which articulate that the fresh α-Mo2C/γ-Al2O3 hydrazine decay catalytic activity is far beyond to that of passivated α-Mo2C/γ-Al2O3 catalyst. Particularly, catalyst deactivation occurs due to the strongly adsorbed NHx species, then yielding to decrease in the catalytic performances under the reaction time at 303 K. So, the produced NH3 under the low temperature process was found to further dissociates into N2 and H2 at higher temperatures. A microwave-assisted the synthesis of Mo2C and WC supported on carbon nanocatalysts have been made and studied by Mnatsakanyan, R., et al's research team as an active catalysts for N2H4 decomposition reaction. Many parameters were analyzed such as irradiation time, gas surroundings, architecture, and as well as formation mechanism of the carbide phases. So, the generated catalysts displayed good catalytic behaviour for the hydrazine disintegration reaction (HzDR) at relatively low temperatures (30-70)°C. Then, the catalytic performance was discovered to be boosted by the assisted-microwave irradiation effect under the decomposition process. Therefore, it is ended that such conditions allow full conversion of N2H4 to NH3 and N2 within minutes. This could be attributed to the synergistic effect of catalysts' components and as well as microwave absorbing carbon. Molybdenum based catalysts might be also extended to hydrazine fuel cells applications, as it presents good catalytic behaviour in the monopropellant hydrazine thrusters technologies. So, in this special ways, more recently, a novel catalyst materials based molybdenum carbides anchored on nitrogen doped carbon composites is reported by Deng, J., et al . MoCx-NC electrocatalyst prepared through pyrolysis is applied as a potential catalyst for hydrazine fuel cell technology. Particularly, the MoCx-NC (900°C, 5%) discovers to be the optimal catalyst, which exhibits superior catalytic performance of 3.56 mA/cm 2 and advisable cycling stability of 86.13% for hydrazine oxidation reaction. Also, under 12 h long-term operation stability, the MoCx-NC (900°C, 5%) delivers 0.96 V (80°C) an open circuit voltage with a maximum power density of 158.26 mW/cm 2 . Hence, it is suggested that MoCx-NC might be applied as a powerful catalyst for direct hydrazine fuel cells in future. In 2019, a prepared Ni2P@Ni10Mo/Ni-Mo-O/NF catalyst is described from Wen's research group as an efficiently active material, which under hydrazine oxidation operation shows fantastic high activity, considerable durability and as well as nearly 100% selectivity toward this targeted reaction. The phosphorization step of the synthesized catalyst was necessary to circumvent the problem happen with unphosphorilated material. Also, NiMo supported over carbon was investigated as an active oxidation catalyst for hydrazine decay as reported in Asset's work . Particularly, NiMo(9:1)/C is highly represented as amongst potential catalyst. So, small molybdenum charges (<15%) but non-negligible content shows superb catalytic activity, as it stabilizes the N2H4 (N-N) bond, thereby avoiding the chemical disintegration of hydrazine to NH3, and the catalysts selectivity toward the complete N2H4 oxidation to N2 gas is enhanced. More recently, an oxygen-doped MoS2 nanoflowers with sulfur vacancy (O-rich MoS2) is synthesized for the hydrazine oxidation reaction as shown in Song's research article . Especially, the sulfur vacancy and doping were discovered to be the mainly active site for the hydrazine oxidation reaction (HzOR). The hydrazine oxidation onset potential was as high as 0.5 V vs RHE. Hence, this doping strategy may furnish new ideas for boosting the design of future hydrazine oxidation catalysts. Furthermore, a powerful Ni1-xFex anchored on polyethyleneimine (PEI)-functionalized molybdenum disulfide (MoS2) material is reported by Li, J., et al's research team as an active ecatalyst for hydrazine fuel cell technology. Analysis revealed that Ni85Fe15 NPs with 2.25 nm average size are uniformly distributed on the PEI-MoS2 sheets. So, the Ni1-xFex/PEI-MoS2 material shows unexpectedly superior performance towards the N2H4 oxidation reaction (HzOR). Due to the structural of PEI-MoS2, the Ni85Fe15/PEI-MoS2 catalyst exhibited higher stability than that of Ni90Fe10/PEI-MoS2 and as well as Ni85Fe15/MoS2 catalysts under HzOR conditions. Hence, this highlights the importance features of the alloy composition and as well as the conducting polymer additions. In addition, a Co(OH)2/MoS2/CC has been recently demonstrated from Cheng's work to possess superior Bifunctional performances for HzOR/HER under alkaline media. In fact, due to the abundant active sites, and boosted reaction kinetics, the Co(OH)2/MoS2/CC ecatalyst delivers 100 mA/cm 2 at low potentials of 177 and -134 mV for HzOR and HER respectively. Especially, in hydrazine-assisted overall water electrolyser system (OHzS), the ecatalyst (Co(OH)2/MoS2/CC) shows low potential to reach 10, 50, and 100 mA/cm 2 . Therefore, this highlight that Co(OH)2/MoS2/CC is a potential candidate material for large-scale preparation hydrogen fuel. A molybdenum metallo-organic precursor (MoO2(acac)2) has been used in Guo's work to create defect-rich crystalline MoP NPs uniformly distributed over reduced graphene oxide (rGO) as highly active ecatalyst for Bifunctional hydrogen evolution and hydrazine oxidation reactions. Indeed, the as (D-MoP/rGO) prepared ecatalyst revealed greater electrochemical active surface area as high as 8 times to that of bulk MoP. Especially, only small overpotentials were required in order to reach 10 mA/cm 2 when D-MoP/rGO ecatalyst is applied in the system HER/HzOR. So, under 12 h operation stability at a small cell voltage as low as 0.74 V vs RHE, the ecatalyst (D-MoP/rGO) in the system (HER/HzOR) water-splitting reached high current density as high as 100 mA/cm 2 . Therefore, such ways can be used to design and synthesized relatively active and stable supported metal phosphide for this complex system and beyond. Recently, a ternary complex base on hematin (HM), Al 3+ salt, and two dimensional molybdenum disulfide (2D-MoS2) is applied to modify the screen-printed graphene electrodes (SPGrEs). So, this modified (HM-Al 3+ -2D-MoS2/SPGrEs) electrodes are used as an effective ecatalyst for sensing hydrazine chemical compound as described in Villa-Manso's research work . Indeed, it is notified that, the hematin anchored on the electrode surface can act as a redox mediator and exhibit tremendous catalytic performance towards the hydrazine oxidation reaction. Particularly, the sulfur presence in 2D-MoS2 structure shows very important features to boost the ecatalyst properties. Therefore, the ecatalyst displays interesting charge transfer kinetic between hematin mediator and electrode surface, thus, offering an advanced capabilities in the design of functionalized electrode surfaces for environmental sensing technologies and beyond. This research article have shown the importance properties of molybdenum based composite materials, which shows higher catalytic performance of hydrazine decomposition in satellite thrusters technology, good hydrazine oxidation reaction (HzOR) in fuel cell technology, hydrogen production via (HER), and as well as environmental hydrazine sensing platform. So, as it presents advanced features for technological applications, its composite design, functionalization, synthesis routes, reaction mechanism could be major factors that researchers can be deeply focused on, and it will then create fantastic catalysis and environment problem solving.