What is the SLS wet dress rehearsal?

It is a full countdown practice for NASA’s Space Launch System. Teams load liquid oxygen and liquid hydrogen, chill lines, test valves, and run the terminal count to seconds before engine start. No engines ignite and no boosters fire. The goal is to validate hardware, software, and ground procedures under real conditions.

Does this result mean Artemis II will launch in March?

It keeps March in play but does not guarantee it. NASA will review data from the rehearsal and outline next steps in a press briefing. The Flight Readiness Review must still clear the stack. Weather, range schedules, or minor hardware work can also shift the target date.

Why are hydrogen leaks a concern for SLS?

Liquid hydrogen is efficient but difficult to contain because its molecules are tiny. Small gaps can vent gas, causing safety risks and scrubs. The clean SLS wet dress rehearsal suggests tighter seals, temperature control, and venting procedures are working, which reduces the odds of leak-driven delays on the next countdown.

How can Singapore investors get exposure to the space theme?

Use SGD brokers that offer US market access. Consider diversified ETFs like ARKX, UFO, or ROKT for broad exposure, then add select single names if you want targeted bets. Plan entries around NASA milestones, mind USD conversion costs, and use limit orders to manage spreads and overnight volatility.

Global Market Insights

SLS Today, February 20: Leak‑Free Rehearsal Clears Path for Artemis II

ByDanny Kontos February 20, 2026February 20, 2026

NASA’s SLS wet dress rehearsal reached T-29 seconds without significant hydrogen leaks, keeping the Artemis II launch path credible. A NASA press briefing on February 20 will outline next steps and whether the March window remains viable. For Singapore investors, a clean test reduces schedule risk and cost overrun worries across the US space supply chain. We see firmer sentiment for propulsion, avionics, and ground systems providers tied to the first crewed lunar flyby since Apollo. We break down what the result means, the near-term catalysts, and practical ways to position with disciplined risk control.