The House committee examining the Jan. 6 attack on Capitol Hill has taken a major step in its investigation into the role any members of Congress played in the incident, issuing subpoenas to House Minority Leader Kevin McCarthy (R-Calif.) and four other GOP lawmakers. Several of the five, including McCarthy, were previously requested to voluntarily provide information to the committee but each refused.

SEE WHICH GOP LAWMAKERS HAVE BEEN CALLED TO TESTIFY

A pair of Twitter executives have left the company as the social network undergoes a shakeup ahead of any takeover deal by billionaire Elon Musk. On Thursday, Twitter's consumer head Keyvon Beykpour announced he would exit the company after joining seven years ago. In a tweet, Beykpour said that the decision to leave was not one he made himself but that he was asked to leave by Twitter CEO Parag Agrawal. 

SEE WHAT THE DEPARTURES MEAN FOR TWITTER'S FUTURE

Call it the first intragalactic selfie. An international team of astronomers on Thursday unveiled the first image of a supermassive black hole at the center of our own Milky Way galaxy -- a cosmic body known as Sagittarius A*. The image -- produced by a global team of scientists known as the Event Horizon Telescope (EHT) Collaboration -- is the first, direct visual confirmation of the presence of this invisible object.

CHECK OUT THE IMAGE ASTRONOMERS CALL GAME-CHANGING

What was the first black hole discovered and when was it confirmed?

Thursday's answer: Apple employee Tony Fadell is known as the creator of the iPod. Ahead of its 2001 launch, the first song played on an iPod using iTunes software was "Groovejet (If This Ain't Love)."