World Solve

Identifying traces of methane, ozone, and water vapor simultaneously on rocky extrasolar planets remains at the limit of current telescopes. Space-based starshades and high-contrast coronagraphs are needed to resolve atmospheric details.

Hydrogen and oxygen boil off due to solar radiation in orbit, prohibiting long-duration storage for deep space stages. Advanced active cryocooling, sunshields, and zero-boil-off insulation technologies are required.

Millimeter-sized meteoroids travel at tens of kilometers per second and pose catastrophic puncture risks to satellites and spacecraft hulls. Ultra-sensitive impact sensors and wide-field detection arrays are needed.

Current space stations must re-supply metabolic consumables, water filtration media, and trace contaminant gases from Earth. Fully regenerative bio-synthetic life support systems are essential for long-term lunar and Martian outposts.

Next-generation telescopes and gigawatt-scale space solar power arrays are too large to fit in single rocket fairings. Highly coordinated multi-robot assembly systems operating in microgravity need to be developed and standardized.

FRBs unleash as much energy in milliseconds as the Sun emits in days, yet their origins—whether magnetars or exotic energetic events—are unconfirmed. Resolving this will yield new insights into extreme astrophysics and cosmic plasma.

Cephalad fluid shifts in microgravity increase intracranial pressure, leading to structural eye deformation and vision impairment. Non-invasive, flight-ready therapies or fluid-redistribution suits are urgently required.

3D-printing complex structural metal components in microgravity often results in porosity and micro-cracks. We need reliable thermal controls and melt-pool monitoring for zero-g metal and composite fabrication.

Navigating craft and rovers on the lunar farside or in deep space relies heavily on congested Earth ground antenna networks. Scalable lunar and deep-space autonomous navigation and timing constellations are needed.

Space-based solar power requires transmitting multi-gigawatt microwave or laser beams safely through Earth's atmosphere. Phased array antenna precision and efficiency losses remain significant engineering bottlenecks.

General relativity governs massive scale gravity while quantum mechanics governs atomic scales, but they break down together at black hole singularities. Developing a unified Theory of Quantum Gravity is the holy grail of theoretical physics.

Measurements of the cosmic microwave background yield a lower expansion rate than direct distance ladder measurements of modern galaxies. Resolving this discrepancy could reveal brand-new physics beyond the Standard Model.

Plants grown in space suffer from water-logging and oxygen starvation around roots due to absence of buoyancy-driven convection. Developing autonomous micro-fluidic aeration root systems is essential for growing fresh crops in space.

A host star is millions to billions of times brighter than a reflecting planet, blinding optical telescopes. Next-generation space interferometers and giant optical starshades are required to resolve exoplanet oceans and continents.

Landers currently depend on pre-mapped terrain, which leaves them vulnerable to boulders, unexpected slopes, and dust plumes during touchdown. Ultra-fast optical-LiDAR terrain-relative navigation is needed for safe pinpoint landing.

Observations show massive black holes existing just a few hundred million years after the Big Bang, far too fast for standard accretion models. Direct collapse seed theories or primordial black hole physics need verification.

Gas-pressurized suits strain astronaut joints, limiting mobility and causing physical fatigue during extravehicular activities. Mechanical counter-pressure suit technology (biosuits) needs practical design breakthroughs.

Large mega-constellations reflect sunlight and emit spurious radio frequencies, interfering with ground-based optical and radio telescopes. Low-reflectivity coatings, active satellite beam steering, and mitigation software are needed.

Robotic planetary landers are restricted by payload weight and power, making complex lab chemistry difficult on site. Micro-fluidic lab-on-a-chip biosensors are required to analyze Martian or icy moon soil in-situ.

Rigid aeroshells are constrained by rocket fairing diameters, limiting landed mass to around 1-2 metric tons. Deployable or inflatable aerodynamic decelerators are needed to land heavy human habitats safely.