Blue Origin has hot fired its BE-4 rocket engine for the first time

I'm curious which one will launch first, BFR or New Glenn. My money is on the BFR, so far with 1200 s Raptor engine fire and full size cryo tank they seem to be making progress. It's good to have Blue Origin breathing down SpaceX's neck though, hopefully it will provide them with sustained motivation.

Biggest thing to me is the use of fuel here. Liquified natural gas has a lot of benefits. Simpler pressurization system, less soot etc<p>The future is exciting.

Anyone know the price to low-earth orbit using New Glenn? (perhaps can be inferred from Eutelsat or OneWeb&#x27;s financial disclosures to regulators?)<p>With Jeff Bezos selling $1 billion worth of Amazon shares a year to fund Blue Origin, will he choose to sell below cost for significant periods of time to stay competitive with the Falcon 9 and Heavy?

A few frames of the video caught my eye: <a href="https:&#x2F;&#x2F;screenshots.firefox.com&#x2F;eOm06NUSg0CSkb1a&#x2F;arstechnica.com" rel="nofollow">https:&#x2F;&#x2F;screenshots.firefox.com&#x2F;eOm06NUSg0CSkb1a&#x2F;arstechnica...</a><p>It looks like there&#x27;s some sort of harmonic wave in the blast. Does anyone have any insights on why the design would result in that?

Anyone know how the specific impulse compares to other engines? I guess the fuel is similar to spacex--better than anything other then hydrogen.

How are they planning to reuse the engine? Will they land the first stage like SpaceX? It took SpaceX a lot of attempts to get that right ...

Anybody knows what&#x27;s special about this engine besides it being able produces more thrust than SpaceX&#x27;s Raptor engine?

In a few years, amazon may also be dominating the defense industry.

Off-Topic: But it&#x27;s not exactly brain surgery, is it? <a href="https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=THNPmhBl-8I" rel="nofollow">https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=THNPmhBl-8I</a>

I get<p><pre><code> ReferenceError: dc is not defined[Learn More] 23b3059e-eac6-432f-b59a-9202ea32f7cb:33:11 </code></pre> When I click on &quot;Encrypt&quot;