Satellites Shrink the Search, Not the Drill

Anyone with a laptop and a Python package can now pull radar imagery of the Earth's crust that would have cost a survey firm real money not long ago. NASA says calibrated L-band data from the NASA-ISRO NISAR mission are available through the Alaska Satellite Facility's archive and NASA Earthdata. The initial public release began July 20, 2026 and covers observations acquired on or after June 17, 2026. Every product is free, and for large-scale processing ASF offers API access and the asf_search package.

That is a small bureaucratic fact with a large commercial edge. Orbital data for mining and energy is shifting from a specialist purchase to open infrastructure: radar that watches the ground move, spectrometers that read minerals from 30 meters' worth of pixel, and, at the speculative end, a spacecraft built to look at asteroids. The pitch is the same everywhere. Satellites tell you where to look and what to watch. Nobody serious claims they tell you what is down there.

The timing matters because explorers are short of money while the world wants more metal. New Space Economy, citing the International Energy Agency, says global mineral exploration spending fell by more than 10% in 2025. The same report says the agency's 2026 minerals outlook projects strong demand growth through 2040 for copper, lithium, nickel, graphite and rare earths. Fewer dollars chasing more demand is exactly when a cheap screening layer earns its keep.

Radar that watches the ground

NISAR's L-band radar, built by NASA's Jet Propulsion Laboratory, works at a 10-inch wavelength and penetrates vegetation canopies and, under certain conditions, snow and ice, NASA says. It images the same locations every 12 days, cloud or no cloud, to build a long-term record for research on subsidence and natural hazards. NASA's complete science record is expected by the end of 2026.

The demonstration NASA chose is a hazard map. Its Earthdata page shows ground displacement in Venezuela after two earthquakes on June 24, 2026, built from passes on June 25 and June 30 set against June 13 and June 18 before the shaking.

Mine operators will recognise the technique. Geofem, a ground-motion consultancy, says InSAR can remotely detect millimetre-scale displacement across most urban and natural terrain, and is especially useful where access is hard. On tailings dams, it says, the trick is separating normal consolidation settlement from the shear deformation that can precede a failure, and machine learning models are being trained to do that. Geofem also claims AI and InSAR have moved dam monitoring from periodic inspection to continuous, predictive oversight. That is a vendor's claim, and a dam owner should read it as one.

Europe is running the same play on operating sites. New Space Economy reports that an EUSPA-supported project involving Eramet used Sentinel-1 radar to pick out millimeter-scale ground movement at mining areas.

Colour as a prospecting tool

Radar reads shape. Hyperspectral sensors read chemistry. New Space Economy says a 2024 study using Germany's EnMAP satellite mapped neodymium across California's Mountain Pass rare-earth district at 30-meter pixel resolution. EnMAP carries two spectrometers spanning roughly 420 to 2,450 nanometers in 232 bands.

Commercial operators are crowding in. Planet's Tanager captures about 426 spectral bands between roughly 380 and 2,500 nanometers at the same 30-meter spacing, according to the same report. Pixxel's Firefly constellation offers 135 bands at about 5.4-meter sampling but skips shortwave infrared, which matters for mineral work. Its Honeybee generation is scheduled for 2027. Public programs are slower. CHIME-A is planned around 2028 and CHIME-B for 2030 to 2031, and Landsat 10 is expected in 2031. Meanwhile, the thermal-infrared subsystem on the ASTER instrument was permanently shut down on January 16, 2026 because of power constraints on its host satellite, New Space Economy reports, leaving geologists one fewer free instrument.

The practical payoff is triage. New Space Economy says space-based screening can help decide which portions of a 5,000-square-kilometer concession deserve closer inspection. Norwegian explorer Kuniko, working with TerraEye, used Sentinel-2 and other data, and per EUSPA's March 2026 account, field work then confirmed several targets. Note the order: the satellite proposed, the field crew disposed.

New Space Economy puts the limit in one line: "A satellite does not replace the drill rig."

The long shot

The extreme version of remote prospecting leaves the planet. AstroForge has finished assembling major flight hardware for DeepSpace-2, Payload reported on June 5, with launch expected before the end of the year on a SpaceX Falcon 9 that also carries Intuitive Machines' IM-3 lunar lander.

The company has a bruise to nurse. Payload reports its first craft, Odin, had its mission cut short 530,000 miles from Earth after its solar array deployment system failed, and that AstroForge had put Odin's odds at just 30% beforehand. Aerospace America describes the loss as a communications failure roughly 24 hours after launch in February 2025, and adds that AstroForge outsourced the build and had to rebuild on a compressed schedule.

DeepSpace-2 weighs 200 kg, with a Safran Hall Effect electric thruster and a high-resolution monochromatic camera that can hint at an asteroid's mineral makeup, Payload says. AstroForge is self-funding it at around $10 million, per Aerospace America. CEO Matt Gialich is bullish. "DeepSpace-2's odds have gone up dramatically—I'd say we're probably in the 70 to 80% chance of success [range]." he told Payload.

The mission's goals are modest, though. Aerospace America reports the main objective is to verify spacecraft performance, with photographs of the target asteroid and perhaps an attempt to land, or at least crash into it. Gialich is blunt about where the risk lives: "thermal and communication are always going to be the things that are the hardest to test and the hardest to do."

What the sky can and cannot settle

Line the four threads up and the pattern is plain. Free radar flags which slopes and dams are moving. Hyperspectral imaging ranks which patches of a vast concession look interesting. Even the asteroid prospector's first goal is proving the hardware works, not proving a deposit. Each layer cuts the cost of deciding where to spend, and none removes the spending.

Which is why the most telling line in AstroForge's plan is the one about landing or crashing. Even from 200 kilograms of spacecraft and a rock in deep space, the exploration answer ends where it always has: something touching the ground, or hitting it.