• Cowboy Space reveals Big Iron rocket with 18 metric ton payload capacity.
• Virgin Galactic's new Delta-class rocket plane reaches Spaceport America.
• ESA's Themis reusable rocket testbed faces delays due to harsh winter.
• Stoke Space secures $150 million loan for second launch pad construction.

The emergence of Cowboy Space may indicate a growing trend of new entrants in the medium-lift launch market, which could lead to increased competition and potentially drive down costs. However, the company's lack of hardware and late entry into the market may suggest significant challenges ahead, and it remains to be seen whether Big Iron can gain traction in a crowded field.