Stephen Clark

Stephen Clark

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Space reporter at Ars Technica; covers NASA, SpaceX, international launch and satellites.

First Crew Walkout Coverage: A Historic Moment Witnessed
SocialApr 1, 2026

First Crew Walkout Coverage: A Historic Moment Witnessed

My first time covering a crew walkout in person. It was worth a moment to take in the history. https://t.co/yFAJKAT1Jd

By Stephen Clark
Artemis II Fueling Begins at Kennedy, Launch Day Overview
SocialApr 1, 2026

Artemis II Fueling Begins at Kennedy, Launch Day Overview

Fueling has started at Kennedy Space Center. Here’s a rundown of all the big events for Artemis II launch day. https://t.co/avBdoxvMmi

By Stephen Clark
US Military Outlines Emerging Moon Strategy
SocialApr 1, 2026

US Military Outlines Emerging Moon Strategy

The US military is developing a strategy for the Moon. Here's where things stand. https://t.co/7DZaZ8Dmnn

By Stephen Clark
This Week's Space Highlights:
SocialMar 27, 2026

This Week's Space Highlights:

In this week's Rocket Report: • Artemis II on track for launch next week • Russia reopens gateway to ISS • Space Force could move more payloads off Vulcan • Russia's Starlink takes flight • Isar scrubs launch attempt https://t.co/QKQhAwmre4

By Stephen Clark
Space Warfare Mirrors 1930s Air Superiority Era
SocialMar 19, 2026

Space Warfare Mirrors 1930s Air Superiority Era

“Where we are today in space warfare is very similar to where air superiority was in the 1930s.” https://t.co/vdPDSKfwkt

By Stephen Clark
Space
SocialMar 13, 2026

Space

In this week's Rocket Report: • Artemis II clears flight readiness review • SpaceX activates second Starbase launch pad • Firefly successfully returns to flight • Pentagon orders high-altitude missile interceptors https://t.co/MhSVS4wljv

By Stephen Clark
Anduril Expands Space Ops with Three Missions, Major Sensor Acquisition
SocialMar 11, 2026

Anduril Expands Space Ops with Three Missions, Major Sensor Acquisition

Anduril's space business is growing, with at least three missions in the pipeline and, now, the acquisition of the world's largest space sensor network. https://t.co/QiWvE96S5k

By Stephen Clark
This Week's
SocialMar 6, 2026

This Week's

In this week's Rocket Report: • Artemis shakeup • SpaceX price hike • Russia repairs Soyuz launch pad • Japan's Space One now 0-for-3 • PLD raises $209 million https://t.co/WKoo20b4gS

By Stephen Clark
Abandoned Soyuz Pad Finds New Tenant After Four Years
SocialMar 3, 2026

Abandoned Soyuz Pad Finds New Tenant After Four Years

It looks like four years of disuse have taken its toll on the Soyuz launch pad in French Guiana. Now, it has new tenant.

By Stephen Clark
GPS Satellite Ready for Launch, Vehicle Still Undecided
SocialFeb 26, 2026

GPS Satellite Ready for Launch, Vehicle Still Undecided

The next GPS satellite is at Cape Canaveral, preparing for launch. Whether it flies on Vulcan or Falcon 9 is up in the air. https://t.co/XxmkgevJk3

By Stephen Clark
Launch Still On Track, New Payload Added to Blue Ring
SocialFeb 25, 2026

Launch Still On Track, New Payload Added to Blue Ring

Tory told me yesterday this is still on track for launch later this year. He has the team working on adding a new payload to Blue Ring for the first test flight, but wasn't ready to offer specifics.

By Stephen Clark
Artemis II Wet Dress Rehearsal Completes Without Major Issues
SocialFeb 20, 2026

Artemis II Wet Dress Rehearsal Completes Without Major Issues

NASA has reached the end of today's Artemis II Wet Dress Rehearsal with no major issues reported. https://t.co/CwpiNIEJYz https://t.co/rPZmmaWMuf

By Stephen Clark
Artemis II Teams Stay Below Hydrogen Leak Safety Limit
SocialFeb 19, 2026

Artemis II Teams Stay Below Hydrogen Leak Safety Limit

This is encouraging: "Teams reached this step without exceeding the ground safety limit of the hydrogen leak concentration, as was observed during the first Artemis II wet dress rehearsal."

By Stephen Clark
NASA Let Hydrogen Leak Grow During Artemis Gap
SocialFeb 14, 2026

NASA Let Hydrogen Leak Grow During Artemis Gap

It turns out NASA used the three-year interim between Artemis I and Artemis II to get comfortable with a more significant hydrogen leak, instead of fixing the leaks themselves. https://t.co/XX1eeIJnR0

By Stephen Clark
Legacy GEO Giant Eutelsat Shifts Focus to LEO
SocialFeb 14, 2026

Legacy GEO Giant Eutelsat Shifts Focus to LEO

This is pretty remarkable. Eutelsat is one of the big three legacy GEO operators, now pivoting to LEO.

By Stephen Clark
Space Systems Command Confirms Two GSSAPs on USSF‑87
SocialFeb 13, 2026

Space Systems Command Confirms Two GSSAPs on USSF‑87

Space Systems Command says there were two GSSAPs on USSF-87. This is their response to my question on the matter last month. https://t.co/IqQ6LR4m9P

By Stephen Clark