All articles
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Science & Discovery
Solar panels stop working past Jupiter. Nuclear reactors are the only practical power source for deep space.
Radioisotope thermoelectric generators have powered deep-space probes since the 1960s. A new generation of compact fission reactors — Kilopower and its successors — could power permanent lunar bases, Mars surface missions, and spacecraft to the outer planets and beyond.
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Missions
Artemis is more than a Moon landing. It's a permanent outpost architecture. Here's the full picture.
Artemis is NASA's plan for sustained human presence near the Moon: a Gateway station in lunar orbit, commercial landers for surface access, the Lunar Terrain Vehicle, and a base camp at the south pole. The architecture is ambitious, politically contingent, and unlike anything attempted in the Apollo era.
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Stargazing
Five planets are visible without a telescope. Here's when and where to find each of them in 2026.
Mercury, Venus, Mars, Jupiter, and Saturn are all visible to the naked eye under dark skies. Their positions shift throughout the year as Earth and the planets orbit the Sun. This guide covers the best viewing windows and what to look for in 2026.
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Science & Discovery
JWST can sniff exoplanet atmospheres. Scientists are debating what a 'biosignature' actually proves.
Biosignatures — atmospheric chemicals whose presence is difficult to explain without biology — are the primary observational strategy for detecting life on exoplanets. JWST has made the first detections of molecules in rocky exoplanet atmospheres. The challenge is interpreting them unambiguously.
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Stargazing
Light pollution has erased the Milky Way for a third of humanity. Dark sky preserves are the counterweight.
The Bortle scale measures sky darkness from 1 (pristine dark) to 9 (inner city). A third of Earth's population lives under skies so bright they cannot see the Milky Way at all. Dark sky preserves — certified by the International Dark-Sky Association — are growing, but so is the light encroachment they resist.
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Commercial
Planet Labs photographs every point on Earth every day. What that means for science and surveillance.
Planet Labs operates the largest commercial Earth observation constellation in history — over 200 Dove cubesats producing daily global coverage. The dense time series enables monitoring of agriculture, deforestation, urban growth, and disaster response at scales and cadences previously impossible.
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Science & Discovery
The Sun occasionally fires plasma clouds at Earth that can knock out power grids. We're not prepared.
Coronal mass ejections — billion-ton clouds of magnetized plasma from the Sun — can trigger geomagnetic storms that damage transformers, disable satellites, and disrupt GPS. The 1859 Carrington Event caused telegraph fires; a comparable storm today would have catastrophic infrastructure consequences.
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NASA & Agencies
China's Tiangong station is complete and permanently crewed. Here's what it's doing.
Tiangong, China's modular space station in low Earth orbit, reached its full three-module configuration in 2022 and has maintained a continuous crew since. It conducts experiments in biology, materials science, space medicine, and Earth observation, while serving as the operational backbone of China's long-term human spaceflight program.
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Stargazing
You don't need a telescope to see deep-sky wonders. A pair of binoculars opens the Messier catalog.
A standard pair of 7x50 or 10x50 binoculars under reasonably dark skies can reveal dozens of Messier objects: open clusters, globular clusters, nebulae, and galaxies. This guide explains which ones to start with, how to find them, and what you'll actually see.
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Commercial
Satellites are replaced when they run out of fuel. A nascent industry wants to refuel and repair them instead.
In-space servicing — refueling, repairing, and repositioning satellites — could extend the operational life of billion-dollar space assets by decades. Northrop Grumman's Mission Extension Vehicles have already done it commercially. The next generation aims to do it at scale.
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NASA & Agencies
ESA's next decade in space: gravitational wave detectors, exoplanet atmospheres, and Venus.
The European Space Agency's science program for the 2030s includes LISA (a space-based gravitational wave observatory), Ariel (systematic exoplanet atmosphere survey), and EnVision (a Venus orbiter). Together they address three of the biggest open questions in astrophysics.
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Missions
After seven years of flying past planets, BepiColombo has finally reached Mercury
ESA and JAXA's BepiColombo mission spent seven years threading gravity assists around Earth, Venus, and Mercury before finally entering Mercury orbit in late 2025. Now its two orbiters are mapping the innermost planet's magnetic field, geology, and interior with unprecedented precision.
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