Out of all the things SpaceX CEO Elon Musk is promoting lately, the most grandiose is a vision that involves planet-hopping spacecrafts to Mars and beyond. Now a first look at a prototype of the spacecraft intended for such purposes has been revealed.

Following the company’s record-breaking 21st launch of the year, Musk released on Twitter late Dec. 23 a photo of what will become a “test hopper,” a prototype of its Starship spacecraft (formerly known as Big Falcon Rocket) intended to make planet hopping a reality.

The spacecraft will be roughly 30 feet wide and 180 feet tall, planned to be capable of landing and re-launching on a remote planet. It’s this spacecraft that will make the first planned voyage to Mars as well as the trip around the moon with a group of artists in a project called Dear Moon by 2023.

The prototype is being constructed at the company’s launch facility in Boca Chica, Texas, a location Musk said in May would be dedicated to its interplanetary spacecraft. Subsections are still being built at the Port of Los Angeles in San Pedro. The “test hopper” will be a version of the Starship but not full size, according to Musk.

“This test hopper is at full body diameter of 9m / 30 ft, just not full height. Super Heavy will be full height & diameter,” Musk tweeted, indicating that the company will go directly to building a full-scale version of the rocket booster, rather than a truncated test version.

When the giant rocket lifts off from Earth it will have a rocket booster, known as Super Heavy, that will be roughly 219 feet tall with 31 raptor engines, a massive rocket the likes of which the world has never seen.

Stainless Steel Starship pic.twitter.com/rRoiEKKrYc — Elon Musk (@elonmusk) December 24, 2018

In addition to revealing a photo and providing some cryptic insight into the thought process of engineers at SpaceX, Musk also pushed up the time frame for testing of the hopper in Texas to March or April, after which he said he would do a full “technical presentation.”

Musk had previously revealed what he called a “final iteration” of BFR during the company’s announcement in September for its trip around the moon. But earlier this month, the CEO said that big design alterations — including a name change — had taken place, the biggest being the elimination of most of the carbon-fiber composite parts. Now the spacecraft is mostly made up of a special stainless steel alloy, according to Musk.

Materials are critical for the rocket’s success as it will need to withstand wide variations in temperatures and extreme vibrations. Consider that the spacecraft will take a months-long voyage to Mars, land on the red planet and then launch back home. The goal is for a trip to Mars now by 2024, a year earlier than first projected.

Financial analysts are speculating that new-found energy for the Starship could be due to an influx in investment capital. The company is set to raise another $500 million, according to the Wall Street Journal, ending 2018 with $1.257 billion in new funds.