Tech mogul Elon Musk expressed optimism about his Department of Government Efficiency at Donald Trump's presidential inauguration, even as lawsuits against the agency caused popular dog-themed cryptocurrency Dogecoin (CRYPTO: DOGE) to plummet.

Getting humans to Mars has long been an obsession for SpaceX CEO Elon Musk. On Monday, that project got a full endorsement from the newly sworn-in president. During his inaugural address, President Donald Trump promised he would “pursue our manifest destiny into the stars,

Mr Musk is in charge of Mr Trump's newly created Department for Government Efficiency (DOGE). Elon Musk's starring role in the new Donald Trump administration was confirmed as he appeared front and centre of his inauguration proceedings - and witnessed him pledge a mission to Mars.

Elon Musk could be seen making a bizarre gesture in response to US President Donald Trump's pledge to send astronauts to Mars during his inaugural speech.

During his inaugural address, President Donald Trump said he wants 'American astronauts' on Mars. Where does a future Mars mission currently stand?

President Donald Trump made a bold promise to America minutes after taking the Oath of Office: pledging that an American flag would be planted on Mars.

A deep philosophical rift between the two billionaire leaders of the “Department of Government Efficiency” left Musk alone at its top, which could give him more power than envisioned

A visibly excited Elon Musk responded with both thumbs up in celebration as Donald Trump shared plan to launch American astronauts to plant the American flag on planet Mars

President Trump pledges in inaugural address to pursue policy that 'expands our territory' and to put US astronauts on Mars.

The world saw Donald Trump take the oath of office for his second non-consecutive term as President of the United States on Monday. The ceremony, held in the Rotunda of the U.S. Capitol, drew an eclectic crowd of tech moguls, foreign diplomats, and business leaders.

The three wealthiest Americans, Elon Musk, Jeff Bezos and Mark Zuckerberg, sat together Monday at the second inauguration of President Donald Trump.